Lake Tawakoni (/təˈwɑːkəni/ tə-WAH-kə-nee) is a 37,879-acre (15,329 ha) reservoir located in Northeast Texas, about 48 miles (77 km) east of Dallas.

The lake was named for the Tawakoni Native American peoples, who were a larger part of the Caddo Nation.

The Caddos inhabited a large swath of North and East Texas, including where the lake is located.

The lake mainly has post oak hardwood timber and plants native to the Texas Blackland Prairies.

In the summer of 2007, Lake Tawakoni State Park was the site of a large, rare spider web.