General data
- Name:
- Water system: Atchafalaya River
- Water type: Artificial lake
- Progression: North Fork Red River -> Red River of the South -> Atchafalaya River -> Gulf of Mexico -> Atlantic Ocean -> Planet Earth
- Climates: Temperate
- Continents: North America
- Countries: United States of America
Lake Altus-Lugert, also known as Lake Altus, Lake Lugert, Lake Lugert-Altus, and Lugert Lake, is a reservoir located on the North Fork Red River, about 27 km north of Altus, Oklahoma on the former site of the town of Lugert, Oklahoma. The river is the boundary between Greer County and Kiowa County, Oklahoma. The lake is used for fishing, boating, swimming, and irrigation. This is also the principal water supply for Altus.