Cougar Rock Campground is a developed campground within Mount Rainier National Park located adjacent to the Nisqually River, offering 173 individual campsites and 5 group sites with flush toilets, potable water, and picnic tables.

The campground sits at 3,180 feet elevation and provides direct access to the Wonderland Trail across the road, with nearby hiking to Carter Falls and other waterfalls along the river.

Note that there are no shower facilities, RV hookups, or working dump station; the campground operates seasonally from late May through early October with reservations recommended during peak summer months.