Canadian Security Intelligence Service

National Headquarters Ottawa:
Telephone: 613-993-9620
Fax: 613-231-0612
TTY: 613-991-9228 (24hrs)

CSIS Regional Office Addresses and Phone Numbers:

Atlantic Region:
Telephone: 902-420-5900
Atlantic Region / New Brunswick District:
Telephone: 506-452-3786

Newfoundland and Labrador District:
Telephone: 709-724-8650

Québec Region:
Telephone: 514-393-5600

Québec Region / Québec City District:
Telephone: 418-529-8926

Ottawa Region:
Telephone: 613-998-1679

Toronto Region:
Telephone: 416-865-1480

Prairie Region (Alberta/Saskatchewan/Manitoba/Thunder Bay):
Telephone: 780-401-7800

Prairie Region / Calgary District:
Telephone: 403-292-5255

Prairie Region / Saskatchewan District:
Telephone: 306-780-5512

British Columbia Region:
Telephone: 604-528-7400