U.S. Highway 83 (US 83), dedicated as the Texas Vietnam Veterans Memorial Highway, is a U.S. Highway in the U.S. state of Texas that begins at US 77 (Interstate 69E, I-69E) in Brownsville and follows the Rio Grande to Laredo, then heads north through Abilene to the Oklahoma border north of Perryton, the seat of Ochiltree County. It is the longest highway in Texas at a length of about , besting the east–west I-10, which has a length of .