The Vancouver Island wolf, also known as the coastal wolf or sea wolf is a subspecies of grey wolf, endemic to the coast of the Pacific Northwest. They are a unique subspecies of wolf due to their semi-aquatic lifestyle, which includes a diet that is almost entirely marine-based.

There are 38 subspecies of Canis lupus listed in the taxonomic authority Mammal Species of the World. These subspecies were named over the past 250 years, and since their naming, a number of them have gone extinct. The nominate subspecies is the Eurasian wolf.