Middle Park, Recreational valley in Grand County, Colorado.

Middle Park is a high basin in Grand County, Colorado, at about 8,000 feet (2,400 m) elevation. It is one of three large mountain valleys on the west side of the Front Range, between North Park and South Park. The Colorado River begins south of the basin and flows through it to Gore Canyon. U.S. Highway 34 crosses the valley and meets U.S. Highway 40 at Granby.

In 1839 the first printed account of Middle Park described it as abundant with antelope, deer, bighorn sheep, bears, buffalo and elk. Robert C. Black III later called it the "Island in the Rockies" because its valleys are surrounded by mountains; his book of that title covers Grand County's history up to 1930.

The name comes from its position as the middle and smallest of three large mountain valleys on the west side of the Front Range, between North Park and South Park. U.S. Highway 34 crosses the valley from northwest to southeast and meets U.S. Highway 40 at Granby. The basin also appears as the fictional town of Middle Park in the animated series South Park.

The area is accessible year-round, though the best time to visit is May through October when trails are clear and weather is more stable. Winter snow and road conditions can limit access during the colder months.

The animated series South Park sets its fictional town of Middle Park in this basin; the town is first mentioned in the season one episode "Big Gay Al's Big Gay Boat Ride" and again in "Quest for Ratings." Co-creator Trey Parker grew up in Conifer, about 40 miles east of Fairplay.