As of April 2015, the head office for Tim Hortons is located at 874 Sinclair Road, Oakville, Ontario, Canada, L6K 2Y1. The phone number is (905) 845-6511, and the toll-free number for guest services is 1-888-601-1616.
Tim Hortons has regional offices in Canada at 667 Cataraqui Woods Dr., Kingston, Ontario, K7P 2Y3; 26585 Gloucester Way, Langley, British Columbia, V4W 3S8; 7460 51st Street S.E., Calgary, Alberta, T2C 4B4; Debert Industrial Park, 476 MacElmon Rd., Box 280, Debert, Nova Scotia, B0M 1G0; and 10590 Chemin Cote de Liesse, Lachine, Quebec, H8T 1A4.
The company also has two offices in the United States. One is at 4150 Tuller Road, Unit 236, Dublin, OH, 43017; the second is at 565 East Grand River Avenue, Suite 101, Brighton, MI, 48116. The toll-free number for guest services is the same: 1-888-601-1616.