Hudson Bay Regional Park is a regional park in the Canadian province of Saskatchewan. It is located on the south side of the town of Hudson Bay in the RM of Hudson Bay No. 394 along the shores of the Red Deer River. The park is the site of a North West Company fur trading fort called Fort Red Deer River that was built in 1790. About 14 kilometres (8.7 mi) downstream, near Erwood, was a Hudson's Bay Company trading post that was built in 1757.