Main Lake Provincial Park, Provincial park in Strathcona Regional District, Canada

Main Lake Provincial Park covers a wilderness area on Quadra Island in British Columbia, centred on six lakes. Main Lake, Village Bay Lake and Mine Lake are joined by narrow, shallow marshes, while Clear Lake, Stramberg Lake and Little Main Lake are reached by hiking or rough portage. The terrain rises to 163 m above sea level, with coniferous forest around the lakes.

Main Lake Provincial Park was created in 1996 as Main Lakes Chain Park on Quadra Island, not Vancouver Island. In 1997 it was renamed and enlarged to cover a wilderness area of six lakes. Main Lake, Village Bay Lake and Mine Lake are joined by narrow, shallow marshes.

The park lies on Quadra Island, the traditional territory of the We Wai Kai and Wei Wai Kum First Nations, whose name for the island is Q̓əq̓əx̌. The lakes and connecting marshes were travelled by canoe, and the island's Kwakwaka'wakw communities maintain ties to these lands today.

The park provides fishing locations, hiking trails, and boat launch points for visitors seeking outdoor activities. Nearby towns offer accommodation and supplies for those planning extended visits.

The park lies on Quadra Island, not Vancouver Island. Its six lakes are split into two groups: Main Lake, Village Bay Lake and Mine Lake are joined by narrow, shallow marshes, while Clear Lake, Stramberg Lake and Little Main Lake can only be reached on foot or by rough portage.