Canadian Security Intelligence Service

Addresses and Telephone Numbers

H.Q. Ottawa

CSIS 
P.O.Box 9732
Postal Station T 
Ottawa, Ontario K1G 4G4 
(613) 993-9620  
Hearing Impaired: (613) 991-9228

Ottawa Region

CSIS 
P.O. Box 9732 
Postal Station T 
Ottawa, Ontario K1G 4G4 
(613) 998-1679  
Toll Free: 1-800-267-7685
(Toll free service is only available in Ontario)

Atlantic Region

CSIS 
1505 Barrington St. 
Suite 1901 
Halifax, Nova Scotia B3J 3K5 
(902) 420-5900

Atlantic Region / New Brunswick District

CSIS 
Bag 6010 
Waggoner's Lane 
Fredericton, New Brunswick E3B 5G4 
(506) 452-3786

Atlantic Region / Newfoundland District

CSIS 
P.O. Box 2585 
Postal Station C 
St. John's, Newfoundland A1C 6J6 
(709) 772-5449

B.C. Region

CSIS 
P.O. Box 80629 
South Burnaby, British Columbia V5H 3Y1 
(604) 528-7400

Quebec Region

CSIS 
P.O. Box 2000 
Station A 
Montreal, Quebec H3C 3A6 
(514) 393-5600

Quebec Region / Quebec City District

CSIS 
P.O. Box 1172 
Quebec City Terminal 
Quebec City, Quebec G1K 7C3 
(418) 529-8926

Toronto Region

CSIS 
277 Front St. West 
10th Floor 
Toronto, Ontario M5V 2X4 
(416) 865-1480

Prairie Region / Edmonton District

CSIS 
Box 105 
10011 - 109 St. 
Edmonton, Alberta T5J 3S8 
(403) 421-5800  
Toll Free: 1-800-661-5780 (Alberta/Saskatchewan/Manitoba/Thunder Bay)

Prairie Region / Calgary District

CSIS 
P.O. Box 2671
Station M
Calgary, Alberta T2P 3C1
(403) 292-5255

Prairie Region / Saskatchewan District

CSIS 
P.O. Box 5089
Main Postal Terminal 
Regina, Saskatchewan S4P 4B2 
(306) 780-5512

Prairie Region / Manitoba District

CSIS 
P.O. Box 771 
Winnipeg, Manitoba R3C 4G3 
(204) 983-5405

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