Paul Lake Provincial Park, Provincial park in Thompson-Nicola Regional District, Canada.

Paul Lake Provincial Park is a provincial park in British Columbia, Canada, set around Paul Lake, southwest of Heffley Lake and northeast of Kamloops. The park lies in the Thompson-Nicola Regional District and has a campground on its grounds. The lake holds rainbow trout, true minnows and amphipods.

Paul Lake and nearby Mount Lolo are both named for Jean Baptiste Lolo, called St. Paul or Chief St. Paul. Of Iroquois and French Canadian origin, he worked as an interpreter at Fort Kamloops and was regarded as a chief by the local Secwepemc people.

The name comes from Jean Baptiste Lolo, an Iroquois and French Canadian interpreter at Fort Kamloops whom the Secwepemc regarded as a chief and who was also called Chief St. Paul. Nearby Mount Lolo carries the same name. The lake now draws anglers for its rainbow trout.

The park lies northeast of Kamloops and southwest of Heffley Lake, reached from the Yellowhead Highway. A campground with tent and recreational-vehicle sites sits inside the park, and the lake holds rainbow trout for anglers. Trails lead through the surrounding forest, and the shoreline gives access to the water.

Paul Lake was originally fishless; rainbow trout were stocked and thrived, then Redside shiners (Richardsonius balteatus) arrived by accident. The resulting competition for amphipods and predator-prey interactions were studied by P.A. Larkin and his students.