Fort Cobb Reservoir
General data
- Name: Fort Cobb Reservoir
- Water system: Atchafalaya River
- Water type: Artificial lake
- Progression: Cobb Creek (Washita River tributary) -> Washita River -> Lake Texoma -> Red River of the South -> Atchafalaya River -> Gulf of Mexico -> Atlantic Ocean -> Planet Earth
- Climates: Subtropical
- Continents: North America
- Countries: United States of America
Fort Cobb Reservoir (also called Fort Cobb Lake) is a reservoir located in Caddo County in the U.S. state of Oklahoma. It impounds the waters of Cobb Creek (joining from the west),] Lake Creek (joining from the north), and Willow Creek (joining from the northeast). The lake covers approximately 16 km2 of water and 72 km of shoreline.