SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    Form 13F

                               FORM 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: September 30, 2008

Check here if Amendment |_|; Amendment Number: _______
This Amendment (Check only one.): |_| is a restatement.
                                  |_| adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:    Sun Life Financial Inc.
Address: 150 King street West
         Toronto, Ontario, Canada, M5H 1J9

Form 13F File Number: 28-05799________

The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:

Name:  J.M.A. Anderson
Title: Executive Vice-President and Chief Investment Officer
Phone: 416-979-6217

Signature, Place, and Date of Signing:


/s/ J.M.A. Anderson               Toronto, Ontario,     November 12, 2008
-----------------------------     -----------------     -----------------
        [Signature]                 [City, State]            [Date]

Report Type (Check only one.):

|_|  13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager
     are reported in this report.)

|_|  13F NOTICE. (Check here if no holdings reported are in this report, and all
     holdings are reported by other reporting manager(s).)

|X|  13F COMBINATION REPORT. (Check here if a portion of the holdings for this
     reporting manager are reported in this report and a portion are reported by
     other reporting manager(s).)

List of Other Managers Reporting for this Manager:

[If there are no entries in this list, omit this section.]

Form 13F File Number    Name
28-06597                McLean Budden
28-04968                MFS

Report Summary:

Number of Other Included Managers:                 2
Form 13F Information Table Entry Total:          218
Form 13F Information Table Value Total: US$1,758,715
                                         (Thousands)

List of Other Included Managers:

Provide a numbered list of the name(s) and Form 13F file number(s) of all
institutional investment managers with respect to which this report is filed,
other than the manager filing this report.

[If there are no entries in this list, state "NONE" and omit the column headings
and list entries.]

No. Form 13F File Number   Name
028-12046                  1 Sun Capital Advisers LLC.
028-12047                  2 Sun Life Assurance Company of Canada

[Repeat as necessary.]



Form 13F INFORMATION TABLE - September 30, 2008



COLUMN 1                          COLUMN 2     COLUMN 3  COLUMN 4         COLUMN 5     COLUMN 6  COLUMN 7      COLUMN 8
                                                                                                           VOTING AUTHORITY
                                                          VALUE     SHRS OR  SH/ PUT/ INVESTMENT   OTHER  -----------------
NAME OF ISSUER                 TITLE OF CLASS   CUSIP   (x$1000)    PRN AMT  PRN CALL DISCRETION MANAGERS SOLE  SHARED NONE
---------------------------------------------------------------------------------------------------------------------------
                                                                                      
3M Corporation                 COM            88579Y101     3,082     44,293 SH       SHARED         1           3,082
3M Corporation                 COM            88579Y101     1,154     16,577 SH       SHARED         2           1,154
Abbott Laboratories            COM            002824100     3,489     65,874 SH       SHARED         1           3,489
Abbott Laboratories            COM            002824100     1,288     24,310 SH       SHARED         2           1,288
Acme Packet Inc                COM            004764106    11,914  1,847,683 SH       SHARED         1          11,914
Acme Packet Inc                COM            004764106     1,936    249,429 SH       SHARED         2           1,936
AERCAP HOLDINGS NV             SHS            N00985106     2,191    173,518 SH       SHARED         1           2,191
AERCAP HOLDINGS NV             SHS            N00985106       823     65,176 SH       SHARED         2             823
Alexandria Real Estate Equit   COM            015271109    12,772    131,214 SH       SHARED         1          12,772
Alexandria Real Estate Equit   COM            015271109       657      6,745 SH       SHARED         2             657
Allstate Corp                  COM            020002101     2,971     65,172 SH       SHARED         1           2,971
Allstate Corp                  COM            020002101     1,107     24,275 SH       SHARED         2           1,107
Altria Group Inc               COM            02209S103     1,278     62,166 SH       SHARED         1           1,278
Altria Group Inc               COM            02209S103       477     23,209 SH       SHARED         2             477
American Express Co            COM            025816109     3,622     96,148 SH       SHARED         1           3,622
American Express Co            COM            025816109     1,367     36,294 SH       SHARED         2           1,367
Amgen Inc                      COM            031162100     3,259     69,102 SH       SHARED         1           3,259
Amgen Inc                      COM            031162100     1,217     25,808 SH       SHARED         2           1,217
Analog Devices Inc             COM            032654105     3,561    112,096 SH       SHARED         1           3,561
Analog Devices Inc             COM            032654105     1,330     41,867 SH       SHARED         2           1,330
Anthem Inc NT                  COM            94973V107     2,277     47,786 SH       SHARED         1           2,277
Anthem Inc NT                  COM            94973V107       851     17,853 SH       SHARED         2             851
AT&T Inc                       COM            00206R102     6,847    203,223 SH       SHARED         1           6,847
AT&T Inc                       COM            00206R102     2,560     75,986 SH       SHARED         2           2,560
AvalonBay Communities Inc      COM            053484101     9,063    101,649 SH       SHARED         1           9,063
AvalonBay Communities Inc      COM            053484101       380      4,265 SH       SHARED         2             380
Bank of America Corp           COM            060505104     5,999    251,338 SH       SHARED         1           5,999
Bank of America Corp           COM            060505104     2,232     93,514 SH       SHARED         2           2,232
Best Buy Company Inc           COM            086516101     3,523     88,961 SH       SHARED         1           3,523
Best Buy Company Inc           COM            086516101     1,316     33,228 SH       SHARED         2           1,316
Boeing Company                 COM            097023105     3,214     48,911 SH       SHARED         1           3,214
Boeing Company                 COM            097023105     1,202     18,297 SH       SHARED         2           1,202
Bookham Inc                    COM            09856E105     7,557  6,007,740 SH       SHARED         1           7,557
Bookham Inc                    COM            09856E105     1,054    623,846 SH       SHARED         2           1,054
Boston Scientific Corp         COM            101137107    18,256  1,488,352 SH       SHARED         1          18,256
Boston Scientific Corp         COM            101137107     2,709    220,396 SH       SHARED         2           2,709
BRE Properties Inc             CL A           05564E106     3,012     69,587 SH       SHARED         1           3,012
BRE Properties Inc             CL A           05564E106       423      9,765 SH       SHARED         2             423
Bristol-Myers Squibb           COM            110122108     2,844    138,544 SH       SHARED         1           2,844
Bristol-Myers Squibb           COM            110122108     1,064     51,847 SH       SHARED         2           1,064
BROADCOM CORP-CL A             CL A           111320107     3,200    117,269 SH       SHARED         1           3,200
BROADCOM CORP-CL A             CL A           111320107     1,199     43,949 SH       SHARED         2           1,199
Brocade Communications Sys     COM            111621306     8,447  1,025,093 SH       SHARED         1           8,447
Brocade Communications Sys     COM            111621306     3,278    397,763 SH       SHARED         2           3,278
Chevron Corporation            COM            166764100    16,565    167,102 SH       SHARED         1          16,565





                                                                                      
Chevron Corporation            COM            166764100     6,226     62,803 SH       SHARED         2           6,226
Ciena Corp                     COM            171779309     4,566    197,066 SH       SHARED         1           4,566
Ciena Corp                     COM            171779309     1,771     76,414 SH       SHARED         2           1,771
Citizens Communications        COM            17453B101     3,884    342,505 SH       SHARED         1           3,884
Citizens Communications        COM            17453B101     1,506    132,812 SH       SHARED         2           1,506
Coca-Cola Company              COM            191216100     4,056     78,022 SH       SHARED         1           4,056
Coca-Cola Company              COM            191216100     1,515     29,148 SH       SHARED         2           1,515
Concurrent Computer Corp       COM            206710204     1,664  2,447,158 SH       SHARED         1           1,664
Concurrent Computer Corp       COM            206710204       657    965,688 SH       SHARED         2             657
ConocoPhillips                 COM            20825C104     5,624     59,580 SH       SHARED         1           5,624
ConocoPhillips                 COM            20825C104     2,108     22,328 SH       SHARED         2           2,108
Cosi Inc                       COM            22122P101     1,994    800,817 SH       SHARED         1           1,994
Cosi Inc                       COM            22122P101       772    309,909 SH       SHARED         2             772
CVS Caremark Corporation       COM            126650100     5,131    129,674 SH       SHARED         1           5,131
CVS Caremark Corporation       COM            126650100     1,917     48,440 SH       SHARED         2           1,917
Developers Diversified Realty  COM            251591103     1,059     30,514 SH       SHARED         1           1,059
Developers Diversified Realty  COM            251591103       233      6,724 SH       SHARED         2             233
Dominion Resources Inc         COM            25746U109     4,198     88,398 SH       SHARED         1           4,198
Dominion Resources Inc         COM            25746U109     1,567     32,998 SH       SHARED         2           1,567
DOMTAR CORP                    COM            257559104     2,746    503,941 SH       SHARED         1           2,746
DOMTAR CORP                    COM            257559104     1,066    195,647 SH       SHARED         2           1,066
Douglas Emmett Inc-w/i         COM            25960P109       743     33,822 SH       SHARED         1             743
Douglas Emmett Inc-w/i         COM            25960P109       106      4,803 SH       SHARED         2             106
Dow Chemical Company           COM            260543103     3,200     91,664 SH       SHARED         1           3,200
Dow Chemical Company           COM            260543103     2,605     67,104 SH       SHARED         2           2,605
Dupont (EI) Nemours and Co     COM            263534109     3,766     87,799 SH       SHARED         1           3,766
Eastgroup Properties           COM            277276101     5,891    137,309 SH       SHARED         1           5,891
Eastgroup Properties           COM            277276101       444     10,341 SH       SHARED         2             444
Eastman Kodak Co               COM            277461109    12,842    864,723 SH       SHARED         1          12,842
Eastman Kodak Co               COM            277461109     2,575    178,445 SH       SHARED         2           2,575
Eli Lilly & Co                 COM            532457108     3,064     66,376 SH       SHARED         1           3,064
Eli Lilly & Co                 COM            532457108     1,145     24,799 SH       SHARED         2           1,145
EMC Corporation                COM            268648102     4,186    350,000 SH       SHARED         1           4,186
Equitable Resources Inc        COM            294549100     4,021     58,227 SH       SHARED         1           4,021
Equitable Resources Inc        COM            294549100     1,510     21,872 SH       SHARED         2           1,510
Equity Residential Properties  SH BEN INT     29476L107     8,913    232,887 SH       SHARED         1           8,913
Equity Residential Properties  SH BEN INT     29476L107       378      9,889 SH       SHARED         2             378
Exelon Corporation             COM            30161N101     5,449     60,566 SH       SHARED         1           5,449
Exelon Corporation             COM            30161N101     2,032     22,591 SH       SHARED         2           2,032
Exxon Mobil Corp               COM            30231G102    18,028    204,564 SH       SHARED         1          18,028
Exxon Mobil Corp               COM            30231G102     6,715     76,194 SH       SHARED         2           6,715
Fedex Corp                     COM            31428X106     2,445     31,037 SH       SHARED         1           2,445
Fedex Corp                     COM            31428X106       914     11,595 SH       SHARED         2             914
FINISAR Corporation            COM            31787A101     1,299  1,299,487 SH       SHARED         1           1,299
General Electric Company       COM            369604103     8,088    303,037 SH       SHARED         1           8,088
General Electric Company       COM            369604103     3,024    113,314 SH       SHARED         2           3,024
General Growth Properties      COM            370021107    11,137    317,915 SH       SHARED         1          11,137
General Growth Properties      COM            370021107       561     16,001 SH       SHARED         2             561
Genworth Financial Inc.        COM            37247D106    19,684  2,286,200 SH       SHARED         1          19,684





                                                                                      
Goldman Sachs Group Inc        COM            38141G104     5,326     30,454 SH       SHARED         1           5,326
Goldman Sachs Group Inc        COM            38141G104     1,987     11,363 SH       SHARED         2           1,987
HCP Inc                        COM            40414L109       896     28,178 SH       SHARED         1             896
HCP Inc                        COM            40414L109       133      4,167 SH       SHARED         2             133
Highwoods Properties Inc       COM            431284108     9,064    288,493 SH       SHARED         1           9,064
Highwoods Properties Inc       COM            431284108       524     16,680 SH       SHARED         2             524
Honeywell International Inc    COM            438516106     4,205     83,629 SH       SHARED         1           4,205
Honeywell International Inc    COM            438516106     1,573     31,293 SH       SHARED         2           1,573
Host Hotels and Resorts Inc    COM            44107P104     7,351    538,527 SH       SHARED         1           7,351
Host Hotels and Resorts Inc    COM            44107P104       374     27,366 SH       SHARED         2             374
International Paper Co         COM            460146103     2,886    123,846 SH       SHARED         1           2,886
International Paper Co         COM            460146103     1,085     46,564 SH       SHARED         2           1,085
Ishares                        MSCI UTD KINGD 464286699    14,695    737,884 SH       SHARED         1          14,695
Ishares                        MSCI FRANCE    464286707     3,135    117,200 SH       SHARED         1           3,135
Ishares                        MSCI GERMAN    464286806       601     25,300 SH       SHARED         1             601
Ishares                        MSCI MEXICO    464286822     1,232     26,400 SH       SHARED         1           1,232
Ishares                        MSCI JAPAN     464286848     7,331    687,706 SH       SHARED         1           7,331
IShares MSCI EAFE              IDX            464287465    29,448    428,838 SH       SHARED         2          29,448
Ishares Tr                     COM            464287465   177,752  3,157,225 SH       SHARED         1         177,752
Johnson & Johnson              COM            478160104     5,856     91,014 SH       SHARED         1           5,856
Johnson & Johnson              COM            478160104     2,188     34,004 SH       SHARED         2           2,188
JP Morgan Chase                COM            46625H100     6,066    176,787 SH       SHARED         1           6,066
JP Morgan Chase                COM            46625H100     2,265     66,004 SH       SHARED         2           2,265
Kimberly-Clark Corp            COM            494368103     3,625     60,642 SH       SHARED         1           3,625
Kimberly-Clark Corp            COM            494368103     1,353     22,636 SH       SHARED         2           1,353
Kimco Realty Corp              COM            49446R109    13,362    387,088 SH       SHARED         1          13,362
Kimco Realty Corp              COM            49446R109       553     16,023 SH       SHARED         2             553
Lexington Realty Trust         COM            529043101     9,231    677,285 SH       SHARED         1           9,231
Lexington Realty Trust         COM            529043101       476     34,904 SH       SHARED         2             476
Lincoln National Corp          COM            534187109     2,607     57,528 SH       SHARED         1           2,607
Lincoln National Corp          COM            534187109       977     21,547 SH       SHARED         2             977
Lowe's Companies               COM            548661107     2,676    128,963 SH       SHARED         1           2,676
Lowe's Companies               COM            548661107       999     48,165 SH       SHARED         2             999
Macerich Company               COM            554382101    11,513    185,313 SH       SHARED         1          11,513
Macerich Company               COM            554382101       576      9,278 SH       SHARED         2             576
Macy's Inc                     COM            55616P104     4,259    219,306 SH       SHARED         1           4,259
Macy's Inc                     COM            55616P104     1,592     82,002 SH       SHARED         2           1,592
Marvell Technology Group       COM            G5876H105    19,907  1,553,794 SH       SHARED         1          19,907
Marvell Technology Group       COM            G5876H105     4,324    244,825 SH       SHARED         2           4,324
Massey Energy Co               COM            576206106     8,134     86,762 SH       SHARED         1           8,134
Massey Energy Co               COM            576206106     3,113     33,206 SH       SHARED         2           3,113
Mattel Inc                     COM            577081102     3,350    195,682 SH       SHARED         1           3,350
Mattel Inc                     COM            577081102     1,255     73,329 SH       SHARED         2           1,255
Medical Properties Trust Inc   COM            58463J304    14,285  1,411,535 SH       SHARED         1          14,285
Medical Properties Trust Inc   COM            58463J304       697     68,851 SH       SHARED         2             697
Merck & Co Inc                 COM            589331107     8,070    236,139 SH       SHARED         1           8,070
Merck & Co Inc                 COM            589331107     1,424     37,788 SH       SHARED         2           1,424
Merge Healthcare Inc           COM            589499102     1,193  1,028,171 SH       SHARED         1           1,193
Merge Healthcare Inc           COM            589499102       484    417,494 SH       SHARED         2             484





                                                                                      
Merrill Lynch & Co Inc         COM            590188108     1,802     56,843 SH       SHARED         1           1,802
Merrill Lynch & Co Inc         COM            590188108       664     20,928 SH       SHARED         2             664
Motorola Inc                   COM            620076109     3,478    473,792 SH       SHARED         1           3,478
Motorola Inc                   COM            620076109     1,320    179,882 SH       SHARED         2           1,320
Mrv Communications Inc         COM            553477100     9,732  8,314,337 SH       SHARED         1           9,732
Mrv Communications Inc         COM            553477100     1,402  1,178,210 SH       SHARED         2           1,402
Nationwide Health Pptys Inc    COM            638620104     1,190     37,783 SH       SHARED         1           1,190
Nationwide Health Pptys Inc    COM            638620104       262      8,310 SH       SHARED         2             262
OPNEXT INC                     COM            68375V105    11,083  2,328,250 SH       SHARED         1          11,083
OPNEXT INC                     COM            68375V105     2,296    426,754 SH       SHARED         2           2,296
Penn Real Estate Investment Tr SH BEN INT     709102107     8,388    362,469 SH       SHARED         1           8,388
Penn Real Estate Investment Tr SH BEN INT     709102107       350     15,110 SH       SHARED         2             350
Pepsico Inc                    COM            713448108     3,819     60,054 SH       SHARED         1           3,819
Pepsico Inc                    COM            713448108     1,429     22,478 SH       SHARED         2           1,429
Pfizer Inc                     COM            717081103     3,604    206,277 SH       SHARED         1           3,604
Pfizer Inc                     COM            717081103     1,344     76,955 SH       SHARED         2           1,344
PHILIP MORRIS INTERNAT-W/I     COM            718172109     3,070     62,166 SH       SHARED         1           3,070
PHILIP MORRIS INTERNAT-W/I     COM            718172109     1,146     23,209 SH       SHARED         2           1,146
Plum Creek Timber Co Common    COM            729251108    11,767    275,517 SH       SHARED         1          11,767
Plum Creek Timber Co Common    COM            729251108       595     13,938 SH       SHARED         2             595
Powershares QQQ Nasdaq 100     COM            73935A104    16,896    432,000 SH       SHARED         1          16,896
Principal Financial Group      COM            74251V102     2,795     66,592 SH       SHARED         1           2,795
Principal Financial Group      COM            74251V102     1,056     25,169 SH       SHARED         2           1,056
Procter & Gamble Co            COM            742718109     5,520     90,770 SH       SHARED         1           5,520
Procter & Gamble Co            COM            742718109     2,062     33,908 SH       SHARED         2           2,062
Prologis                       SH BEN INT     743410102    16,420    302,125 SH       SHARED         1          16,420
Prologis                       SH BEN INT     743410102       691     12,709 SH       SHARED         2             691
Public Storage                 COM            74460D109     3,132     38,768 SH       SHARED         1           3,132
Public Storage                 COM            74460D109       448      5,540 SH       SHARED         2             448
Rackable Systems Inc           COM            750077109    20,899  1,811,623 SH       SHARED         1          20,899
Rackable Systems Inc           COM            750077109     4,528    337,932 SH       SHARED         2           4,528
Regency Centers Corp           COM            758849103     6,430    108,760 SH       SHARED         1           6,430
Regency Centers Corp           COM            758849103       394      6,664 SH       SHARED         2             394
Schering-Plough Corp           COM            806605101     5,710    289,998 SH       SHARED         1           5,710
Schering-Plough Corp           COM            806605101     2,219    112,703 SH       SHARED         2           2,219
Simon Property Group Inc       COM            828806109    20,941    232,961 SH       SHARED         1          20,941
Simon Property Group Inc       COM            828806109     1,025     11,403 SH       SHARED         2           1,025
SL Green Realty Corp           COM            78440X101    12,518    151,327 SH       SHARED         1          12,518
SL Green Realty Corp           COM            78440X101       954     11,528 SH       SHARED         2             954
SPDR Trust                     SER 1          78462F103   679,030  5,838,515 SH       SHARED         1         679,030
SPDR Trust                     SER 1          78462F103     2,603     20,336 SH       SHARED         2           2,603
Sprint Nextel Corp             COM            852061100     4,578    481,935 SH       SHARED         1           4,578
Sprint Nextel Corp             COM            852061100       749     78,813 SH       SHARED         2             749
Telabs Inc                     COM            879664100     4,620    993,462 SH       SHARED         1           4,620
Telabs Inc                     COM            879664100     1,793    385,489 SH       SHARED         2           1,793
Tenet Healthcare Corp          COM            88033G100     8,115  1,459,585 SH       SHARED         1           8,115
Tenet Healthcare Corp          COM            88033G100       632    113,699 SH       SHARED         2             632
TERRESTAR CORP                 COM            881451108     3,257    818,355 SH       SHARED         1           3,257
TERRESTAR CORP                 COM            881451108     1,233    309,827 SH       SHARED         2           1,233





                                                                                      
Time Warner Inc                COM            887317105     3,444    232,682 SH       SHARED         1           3,444
Time Warner Inc                COM            887317105     1,292     87,270 SH       SHARED         2           1,292
United Technologies Corp       COM            913017109     3,776     61,194 SH       SHARED         1           3,776
United Technologies Corp       COM            913017109     1,412     22,891 SH       SHARED         2           1,412
Unitedhealth Group Inc         COM            91324P102     2,131     81,167 SH       SHARED         1           2,131
Unitedhealth Group Inc         COM            91324P102       797     30,375 SH       SHARED         2             797
Ventas Inc                     COM            92276F100     7,607    178,690 SH       SHARED         1           7,607
Ventas Inc                     COM            92276F100       424      9,954 SH       SHARED         2             424
Verso Paper Corp               COM            92531L108       920    353,958 SH       SHARED         1             920
Viacom Inc-class B             CL B           92553P201     3,027     99,121 SH       SHARED         1           3,027
Viacom Inc-class B             CL B           92553P201     1,131     37,027 SH       SHARED         2           1,131
Vicor Corp                     COM            925815102     8,530    918,039 SH       SHARED         1           8,530
Vicor Corp                     COM            925815102     1,315    131,731 SH       SHARED         2           1,315
Vornado Realty Trust           SH BEN INT     929042109    14,705    167,104 SH       SHARED         1          14,705
Vornado Realty Trust           SH BEN INT     929042109       616      7,003 SH       SHARED         2             616
Wachovia Corp                  COM            929903102     2,763    177,931 SH       SHARED         1           2,763
Wachovia Corp                  COM            929903102     1,037     66,801 SH       SHARED         2           1,037
Wal-Mart Stores Inc            COM            931142103     4,219     75,073 SH       SHARED         1           4,219
Wal-Mart Stores Inc            COM            931142103     1,575     28,028 SH       SHARED         2           1,575
Wells Fargo & Co               COM            949746101     5,291    222,784 SH       SHARED         1           5,291
Wells Fargo & Co               COM            949746101     1,968     82,868 SH       SHARED         2           1,968
Weyerhaeuser Co                COM            962166104    12,279    240,098 SH       SHARED         1          12,279
Weyerhaeuser Co                COM            962166104       619     12,102 SH       SHARED         2             619
Williams Cos Inc               COM            969457100     8,845    374,000 SH       SHARED         1           8,845
Wyeth                          COM            983024100     3,934     82,033 SH       SHARED         1           3,934
Wyeth                          COM            983024100     1,469     30,639 SH       SHARED         2           1,469

Grand Total                                             1,758,715 74,723,866 SH

                                              U.S.        784,124 43,058,743
                                              Canada      974,591 31,665,123

                                                        1,758,715 74,723,866