Ciudad Acuña, also known simply as Acuña, (originally Garza Galán, later Villa Acuña) is a city located in the Mexican state of Coahuila, at 29°19′9″N, 100°56′3″W and a mean height above sea level of 280 metres. It stands on the Rio Grande (locally known as the Río Bravo), which at this point marks the U.S.-Mexico border, and offers a border crossing with the neighbouring city of Del Rio in the U.S. state of Texas. It serves as the municipal seat of the surrounding Acuña municipality.