- Mississippi River: The Mississippi River is the largest river in North America and flows through the eastern part of Louisiana, forming the border with Mississippi.
- Red River: The Red River flows through the northwestern part of the state and is known for its rich history and role in the Civil War.
- Atchafalaya River: The Atchafalaya River is a major distributary of the Mississippi River and flows through the south-central part of Louisiana.
- Calcasieu River: The Calcasieu River flows through the southwestern part of the state and empties into the Gulf of Mexico.
- Pearl River: The Pearl River flows through the southeastern part of the state and forms the border with Mississippi.