Darlington Provincial Park, Provincial park in Regional Municipality of Durham, Canada.

Darlington Provincial Park lies just south of Highway 401 at Bowmanville, Ontario, on the north shore of Lake Ontario, and encloses shallow McLaughlin Bay. Its gentle hills are a terminal moraine left by glaciers at the end of the last Ice Age. The land was cleared for farmland and reforested in the 1960s, so most trees are second growth.

Three Loyalist families — Roger Conant, John Burk and John Trull — settled this land in 1794 after Lord Simcoe offered free land to Loyalists. Samuel Burk, a descendant of John Burk, bought the property that is now the park in 1818 and lived there until his death in 1833. A cemetery used by the Burk family stands on the park grounds.

The park is known for migrating monarch butterflies, which can often be seen flying through it in September as they head south to Mexico. The land was settled in 1794 by three Loyalist families—Roger Conant, John Burk and John Trull—who took up Lord Simcoe's offer of free land. A cemetery used by the Burk family, descendants of John Burk, lies on the park property.

The park lies just south of Highway 401, between Bowmanville and Oshawa, with the beach and McLaughlin Bay on the Lake Ontario side. The terrain is flat to gently rolling, so trails are easy walking. The neighbouring property to the west is the Canadian headquarters of General Motors.

McLaughlin Bay was naturally cut off from Lake Ontario in the 1990s when wave action built up a sandbar that eventually closed the connection between the two. Many visitors head straight to the main beach and never realize there is a separate, shallow body of water just behind it.