Neys Provincial Park, Provincial park in Thunder Bay District, Canada.

Neys Provincial Park covers 5,383 hectares on the north shore of Lake Superior, west of Marathon, Ontario. It takes in the Coldwell Peninsula and the islands of Pic, Detention and the Sullivans. The park protects the exposed rock of the Coldwell Complex, a magmatic chamber formed over a billion years ago, along with boreal forest and a beach on the lake.

During World War II the park held Neys Camp 100 (Camp W), a prisoner-of-war camp for German captives. The camp was built on a flattened sand-dune site, and its Red Pine plantation was later linked by park naturalists to a Boy Scouts of Canada Centennial Project in the 1960s. A model of the camp is displayed at the Neys Visitor Centre.

Lawren Harris of the Group of Seven painted Pic Island in 1924, and the island lies within the park's boundaries. The Neys Visitor Centre holds a model of the former German prisoner of war camp, Camp 100, that once stood on park ground.

Neys lies on the north shore of Lake Superior, about 11 km west of Marathon, Ontario, and is reached by road from that town. The 2.5 km linear trail crosses the exposed rock of the Coldwell Complex; its interpretive plaques were removed in 2018 after weathering made them hard to read. The Neys Visitor Centre holds a model of the former German prisoner of war camp.

Subarctic plant species thrive within the park, extending their range into this more southern location. Woodland Caribou occasionally pass through the area as part of their natural movement patterns.