| Lake Ouachita State Park | |
| Photo Width: | 230 |
| Photo Alt: | Colored evening sky |
| Map: | Arkansas |
| Relief: | 1 |
| Label: | Lake Ouachita State Park |
| Location: | Garland County, Arkansas, United States |
| Coords: | 34.6158°N -93.1847°W |
| Established: | 1953; opened 1955 |
| Designation: | Arkansas state park |
| Administrator: | Arkansas Department of Parks, Heritage, and Tourism |
| Website: | Lake Ouachita State Park |
Lake Ouachita State Park is a 360acres public recreation area located 10miles northwest of Hot Springs, on the eastern side of Lake Ouachita, which at is the largest man-made lake located entirely within the state of Arkansas. In addition to its recreational offerings, the park preserves the site of the historic Three Sisters springs which were once touted for the curative properties of their mineral waters.
Park amenities include a visitors' center, restaurant, cabins and campsites, marina, swimming area, hiking trails, boat ramps, and interpretive exhibits.