| Lewis and Clark State Park | |
| Photo Width: | 280 |
| Map: | North Dakota |
| Map Width: | 280 |
| Relief: | 1 |
| Label: | Lewis and Clark State Park |
| Location: | Williams County, North Dakota, United States |
| Nearest City: | Williston, North Dakota |
| Coords: | 48.1258°N -103.2289°W |
| Area: | 524.81acres |
| Elevation: | 1844feet |
| Established: | 1973 |
| Free Label: | Named for |
| Designation: | North Dakota state park |
| Administrator: | North Dakota Parks and Recreation Department |
Lewis and Clark State Park is a public recreation area occupying in Williams County, North Dakota, where Gamache Creek enters Lake Sakakawea, east of Williston. The state park offers fishing, boating, camping, and picnicking.
The park is named for Meriwether Lewis and William Clark, the leaders of the Corps of Discovery, which camped near here on April 17, 1805. The North Dakota state parks department added three park units on Lake Sakakawea after the state legislature authorized the leasing of land from the U.S. Army Corps of Engineers in 1971. Lake Sakakawea and Lewis and Clark state parks were established in 1973; Fort Stevenson State Park near Garrison was established in 1974.
The park features a marina with slips for rental, a swimming beach, campground. cabins, and 9miles of trails for hiking and mountain biking.