UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F Form 13F COVER PAGE Report for the Calendar Year or Quarter Ended: June 30, 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 August 11, 2006 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: 146 Form13F Information Table Value Total: $15,833,519 (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 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 1443 17845 SH DEFINED 17845 0 0 ABITIBI-CONSOLIDATED INC COM 003924107 18546 6877532 SH SOLE 6877532 0 0 ADVANTAGE ENERGY INCOME FD TR UNIT 00762L101 7518 430567 SH SOLE 430567 0 0 AGNICO EAGLE MINES LTD COM 008474108 5285 159400 SH SOLE 159400 0 0 AGRIUM INC COM 008916108 5716 246155 SH SOLE 246155 0 0 ALCAN INC COM 013716105 113796 2429123 SH SOLE 2429123 0 0 ALCOA INC COM 013817101 603 18595 SH DEFINED 18595 0 0 ALTRIA GROUP INC COM 02209S103 1312 17845 SH DEFINED 17845 0 0 AMERICAN EXPRESS CO COM 025816109 991 18595 SH DEFINED 18595 0 0 AMERICAN INTL GROUP INC COM 026874107 1099 18595 SH DEFINED 18595 0 0 ANHEUSER BUSCH COS INC COM 035229103 3419 75000 SH SOLE 75000 0 0 AT&T INC COM 00206R102 519 18595 SH DEFINED 18595 0 0 AT&T INC COM 00206R102 5435 194855 SH SOLE 194855 0 0 ATI TECHNOLOGIES INC COM 001941103 5782 397895 SH SOLE 397895 0 0 AVAYA INC COM 053499109 1142 100000 SH SOLE 100000 0 0 BANK MONTREAL QUE COM 063671101 1189550 22107495 SH SOLE 22107495 0 0 BANK OF AMERICA CORPORATION COM 060505104 9620 200000 SH SOLE 200000 0 0 BARRICK GOLD CORP COM 067901108 128317 4344181 SH SOLE 4344181 0 0 BCE INC COM 05534B109 16544 700000 SH SOLE 1 700000 0 0 BCE INC COM 05534B109 946844 40063185 SH SOLE 40063185 0 0 BIOVAIL CORP COM 09067J109 5350 229169 SH SOLE 229169 0 0 BOEING CO COM 097023105 1525 18595 SH DEFINED 18595 0 0 BRISTOL MYERS SQUIBB CO COM 110122108 2586 100000 SH SOLE 100000 0 0 BROOKFIELD ASSET MGMT INC CL A LTD VT SH 112585104 666753 16590061 SH SOLE 16590061 0 0 BROOKFIELD PPTYS CORP COM 112900105 79100 2492690 SH SOLE 2492690 0 0 CAE INC COM 124765108 16749 2199457 SH SOLE 2199457 0 0 CAMECO CORP COM 13321L108 42271 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METHANEX CORP COM 59151K108 29513 1399998 SH SOLE 1399998 0 0 MI DEVS INC CL A SUB VTG 55304X104 32912 970562 SH SOLE 970562 0 0 MICROSOFT CORP COM 594918104 9320 400000 SH SOLE 400000 0 0 MICROSOFT CORP COM 594918104 776 33595 SH DEFINED 33595 0 0 MOLSON COORS BREWING CO CL B 60871R209 5228 76667 SH SOLE 76667 0 0 NEUROCHEM INC COM 64125K101 1469 139516 SH SOLE 139516 0 0 NEXEN INC COM 65334H102 81582 1447724 SH SOLE 1447724 0 0 NISOURCE INC COM 65473P105 6552 300000 SH SOLE 300000 0 0 NORTEL NETWORKS CORP NEW COM 656568102 15098 6795146 SH SOLE 6795146 0 0 NORTH AMERN PALLADIUM LTD COM 656912102 2003 232179 SH SOLE 232179 0 0 NORTHGATE MINERALS CORP COM 666416102 2741 750000 SH SOLE 750000 0 0 NOVA CHEMICALS CORP COM 66977W109 51578 1795743 SH SOLE 1795743 0 0 NOVELIS INC COM 67000X106 11667 545818 SH SOLE 545818 0 0 OPPENHEIMER HLDGS INC CL A NON VTG 683797104 222 8336 SH SOLE 8336 0 0 ORBITAL SCIENCES CORP COM 685564106 234 14500 SH DEFINED 1 14500 0 0 PATTERSON UTI ENERGY INC COM 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