Courtenay is a city of about 26,000 on the east coast of Vancouver Island, in the Canadian province of British Columbia. It is the largest community and only city in the area commonly known as the Comox Valley, and the seat of the Comox Valley Regional District, which replaced the Comox-Strathcona Regional District. Courtenay is 4 km (2.5 mi) west of the town of Comox, 7 km (4.3 mi) northeast of the village of Cumberland, 5 km (3.1 mi) northwest of the unincorporated settlement of Royston, and 108 km (67 mi) northwest of Nanaimo. Along with Nanaimo and Victoria, it is home to The Canadian Scottish Regiment, a Primary Reserve infantry regiment of the Canadian Armed Forces.

Vancouver Island is an island in the northeastern Pacific Ocean and part of the Canadian province of British Columbia. The island is 456 km (283 mi) in length, 100 km (62 mi) in width at its widest point, and 32,100 km2 (12,400 sq mi) in total area, while 31,285 km2 (12,079 sq mi) are of land. The island is the largest by area and the most populous along the west coasts of the Americas.