Sabine River (Texas–Louisiana)
 The Sabine River (/səˈbiːn/; Alibamu: Sabìina Sabìnka ) is a river 510 miles (820 km) long in the U.S. states of Texas and Louisiana. In its lower course it forms part of the boundary between the two states and empties into Sabine Lake an estuary of the Gulf of Mexico. The river formed part of the United States-Mexican as well as the United States-Republic of Texas international boundary during the early 19th century.