"I'm going to leave old Texas now", also known as "Old Texas", "The Texas Song" and "Going to Leave Old Texas" is an American cowboy song. It is often sung to the similar tune of "Bury Me Not on the Lone Prairie". It was collected by John Lomax from John Erhard in Dallas, Texas. It was printed in Austin E. and Alta S. Fife's Cowboy and Western Songs (1969) (as "The Trail to Mexico"), Lomax's Cowboy Songs (1938) and Tinsley's He Was Singin' This Song (1981). It is #12711 in the Roud Folk Song Index.