UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F Form 13F COVER PAGE Report for the Calendar Year or Quarter Ended: December 31, 2006 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: The Bank of Nova Scotia Address: 40 King St. West Scotia Plaza 9th Floor Toronto, Ontario, M5H 1H1 13F File Number: 28-11475 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: Maria Theofilaktidis Title: Vice President, Financial Accounting and Controls Phone: 416-866-4269 Signature, Place, and Date of Signing: /s/ Maria Theofilaktidis Toronto, Ontario, Canada February 05, 2007 Report Type (Check only one.): [ ] 13F HOLDINGS REPORT. [ ] 13F NOTICE. [ X] 13F COMBINATION REPORT. List of Other Managers Reporting for this Manager: Form 13F File Number Name 28-11461 Scotia Capital Inc. 28-11460 Scotia Cassels Investment Counsel Ltd. 28-11459 Bank of Nova Scotia Trust Co. FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 1 Form13F Information Table Entry Total: 154 Form13F Information Table Value Total: $17,419,712 (thousands) List of Other Included Managers: Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional managers with respect to which this report is filed, other than the manager filing this report. No. 13F File Number Name 1 28-11472 BNS Investments Inc. FORM 13F INFORMATION TABLE VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE ------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- -------- 3M CO COM 88579Y101 1307 16845 SH DEFINED 16845 0 0 ABITIBI-CONSOLIDATED INC COM 003924107 25813 10061032 SH SOLE 10061032 0 0 AGNICO EAGLE MINES LTD COM 008474108 7750 187800 SH SOLE 187800 0 0 AGRIUM INC COM 008916108 7470 238255 SH SOLE 238255 0 0 ALCAN INC COM 013716105 119388 2450423 SH SOLE 2450423 0 0 ALCOA INC COM 013817101 481 16095 SH DEFINED 16095 0 0 ALTRIA GROUP INC COM 02209S103 1371 16045 SH DEFINED 16045 0 0 AMERICAN EXPRESS CO COM 025816109 973 16095 SH DEFINED 16095 0 0 AMERICAN INTL GROUP INC COM 026874107 1150 16115 SH DEFINED 16115 0 0 ANGIOTECH PHARMACEUTICALS IN COM 034918102 1341 766800 SH SOLE 766800 0 0 ANHEUSER BUSCH COS INC COM 035229103 3690 75000 SH SOLE 75000 0 0 AT&T INC COM 00206R102 591 16595 SH DEFINED 16595 0 0 AT&T INC COM 00206R102 4285 119855 SH SOLE 119855 0 0 AXCAN PHARMA INC COM 054923107 7930 1 SH SOLE 1 0 0 BANK MONTREAL QUE COM 063671101 1308549 22101195 SH SOLE 22101195 0 0 BANK OF AMERICA CORPORATION COM 060505104 10678 200000 SH SOLE 200000 0 0 BARRICK GOLD CORP COM 067901108 129916 4223264 SH SOLE 4223264 0 0 BCE INC COM NEW 05534B760 17257 640500 SH SOLE 1 640500 0 0 BCE INC COM NEW 05534B760 936193 34746470 SH SOLE 34746470 0 0 BIOVAIL CORP COM 09067J109 4506 213469 SH SOLE 213469 0 0 BOEING CO COM 097023105 1424 16095 SH DEFINED 16095 0 0 BRISTOL MYERS SQUIBB CO COM 110122108 2632 100000 SH SOLE 100000 0 0 BROOKFIELD ASSET MGMT INC CL A LTD VT SH 112585104 620228 12824936 SH SOLE 12824936 0 0 BROOKFIELD PPTYS CORP COM 112900105 98279 2492590 SH SOLE 2492590 0 0 CAE INC COM 124765108 18233 1976657 SH SOLE 1976657 0 0 CAMECO CORP COM 13321L108 42134 1040316 SH SOLE 1040316 0 0 CANADIAN NAT RES LTD COM 136385101 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458140100 6075 300000 SH SOLE 300000 0 0 INTERNATIONAL BUSINESS MACHS COM 459200101 1630 16845 SH DEFINED 16845 0 0 INTEROIL CORP COM 460951106 8602 284470 SH SOLE 284470 0 0 IPSCO INC COM 462622101 14424 153400 SH SOLE 153400 0 0 ISHARES INC MSCI JAPAN 464286848 712 50000 SH SOLE 50000 0 0 ISHARES TR DJ US REAL EST 464287739 2600 31030 SH SOLE 31030 0 0 ISHARES TR MSCI EAFE IDX 464287465 497 6780 SH SOLE 6780 0 0 ISHARES TR MSCI EMERG MKT 464287234 870 7620 SH SOLE 7620 0 0 IVANHOE MINES LTD COM 46579N103 2102 1 SH SOLE 1 0 0 JOHNSON & JOHNSON COM 478160104 1055 16045 SH DEFINED 16045 0 0 JP MORGAN CHASE & CO COM 46625H100 774 16095 SH DEFINED 16095 0 0 KINROSS GOLD CORP COM NO PAR 496902404 6688 563979 SH SOLE 563979 0 0 LUNDIN MINING CORP COM 550372106 5431 147200 SH SOLE 147200 0 0 MAGNA INTL INC CL A 559222401 287874 3573967 SH SOLE 3573967 0 0 MANULIFE FINL CORP COM 56501R106 1710265 50651661 SH SOLE 50651661 0 0 MCDONALDS CORP COM 580135101 733 16595 SH DEFINED 16595 0 0 MDS INC COM 55269P302 7818 428374 SH SOLE 428374 0 0 MEMC ELECTR MATLS INC COM 552715104 1957 50000 SH SOLE 50000 0 0 MERCK & CO INC COM 589331107 734 16895 SH DEFINED 16895 0 0 MERIDIAN GOLD INC COM 589975101 452 1 SH SOLE 1 0 0 METHANEX CORP COM 59151K108 38322 1399998 SH SOLE 1399998 0 0 MI DEVS INC CL A SUB VTG 55304X104 34646 968262 SH SOLE 968262 0 0 MICROSOFT CORP COM 594918104 501 16845 SH DEFINED 16845 0 0 MOLSON COORS BREWING CO CL B 60871R209 5856 76667 SH SOLE 76667 0 0 NEUROCHEM INC COM 64125K101 2779 129516 SH SOLE 129516 0 0 NEXEN INC COM 65334H102 81631 1481824 SH SOLE 1481824 0 0 NISOURCE INC COM 65473P105 7230 300000 SH SOLE 300000 0 0 NOKIA CORP SPONSORED ADR 654902204 204 10000 SH DEFINED 1 10000 0 0 NORTEL NETWORKS CORP NEW COM NEW 656568508 31631 674615 SH SOLE 674615 0 0 NORTH AMERN PALLADIUM LTD COM 656912102 1767 232179 SH SOLE 232179 0 0 NORTHGATE MINERALS CORP COM 666416102 473 135100 SH SOLE 135100 0 0 NOVA CHEMICALS CORP COM 66977W109 49920 1790043 SH SOLE 1790043 0 0 NOVELIS INC COM 67000X106 13382 478538 SH SOLE 478538 0 0 OPPENHEIMER HLDGS INC CL A NON VTG 683797104 280 8336 SH SOLE 8336 0 0 ORBITAL SCIENCES CORP COM 685564106 267 14500 SH DEFINED 1 0 0 14500 PATTERSON UTI ENERGY INC COM 703481101 4646 200000 SH SOLE 200000 0 0 PENN WEST ENERGY TR TR UNIT 707885109 9025 295700 SH SOLE 295700 0 0 PETRO-CDA COM 71644E102 124650 3042255 SH SOLE 3042255 0 0 PFIZER INC COM 717081103 415 16095 SH DEFINED 16095 0 0 PFIZER INC COM 717081103 19425 750000 SH SOLE 750000 0 0 PHARMACEUTICAL HLDRS TR DEPOSITRY RCPT 71712A206 7706 100000 SH SOLE 100000 0 0 POPULAR INC COM 733174106 2693 150000 SH SOLE 150000 0 0 POTASH CORP SASK INC COM 73755L107 53088 370473 SH SOLE 370473 0 0 PRECISION DRILLING TR TR UNIT 740215108 579 25000 SH SOLE 25000 0 0 PRIMEWEST ENERGY TR TR UNIT NEW 741930309 7379 400000 SH SOLE 400000 0 0 PROCTER & GAMBLE CO COM 742718109 1081 16895 SH DEFINED 16895 0 0 PROGRESS ENERGY INC COM 743263105 5350 109000 SH SOLE 109000 0 0 QUALCOMM 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COM 87425E103 400970 23600565 SH SOLE 23600565 0 0 TECK COMINCO LTD CL B 878742204 346305 4591403 SH SOLE 4591403 0 0 TELUS CORP NON-VTG SHS 87971M202 263056 5892084 SH SOLE 5892084 0 0 TEXAS INSTRS INC COM 882508104 7176 150001 SH SOLE 150001 0 0 THOMSON CORP COM 884903105 413114 9951282 SH SOLE 9951282 0 0 TIM HORTONS INC COM 88706M103 8693 300700 SH SOLE 300700 0 0 TORONTO DOMINION BK ONT COM NEW 891160509 1899982 31759020 SH SOLE 31759020 0 0 TRANSALTA CORP COM 89346D107 53719 2350000 SH SOLE 1 2350000 0 0 TRANSALTA CORP COM 89346D107 144045 6301437 SH SOLE 6301437 0 0 TRANSCANADA CORP COM 89353D107 696873 19998427 SH SOLE 19998427 0 0 TRANSCANADA CORP COM 89353D107 37460 1075000 SH SOLE 1 1075000 0 0 UNITED TECHNOLOGIES CORP COM 913017109 1052 16890 SH DEFINED 16890 0 0 VALERO ENERGY CORP NEW COM 91913Y100 10232 200000 SH SOLE 200000 0 0 VERIZON COMMUNICATIONS COM 92343V104 597 16095 SH DEFINED 16095 0 0 VERIZON COMMUNICATIONS COM 92343V104 3724 100000 SH SOLE 100000 0 0 WAL MART 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