"Train on a Track" is a song by American singer Kelly Rowland. It was written by Rob Fusari, Sylvester Jordan Jr., Balewa Muhammad, and Tiaa Wells and recorded by Rowland for her solo debut album Simply Deep (2002), while production was helmed by Fusari. A light and breezy pop rock song that is built around an acoustic guitar-driven instrumentation, the love song has Rowland singing about a person whom she considers her equal in every manner. The song's musical composition, as well as Rowland's harmonies and the poetic wordplay of its lyrics, positively surprised critics.

The song was released as the third international and final single from Simply Deep in August 2003. A moderate commercial success, it became Rowland's fourth consecutive the top twenty entry on the UK Singles Chart, peaking at number twenty. In addition, "Train on a Track" charted in Australia, Germany, Ireland, the Netherlands, Scotland, and Switzerland. An accompanying music video was directed by Antti Jokinen and filmed in the Northern Beaches region of Sydney in mid-2003. In support of its single release, Rowland made the song part of her Simply Deeper Tour (2003) setlist and performed it at the TMF Awards. It was also featured on the soundtracks to the romantic comedy films The Seat Filler (2004) and Maid in Manhattan (2002).