"Unstoppable" is a song written by Hillary Lindsey, Jay DeMarcus, and James T. Slater and recorded by American country music group Rascal Flatts.

It was released in January 2010 as the fourth and final single and title track from their 2009 album of the same name.

The song is a ballad, in which the narrator urges to push through tough times ("Love is unstoppable").

The group performed the song on the March 4, 2010 episode of CSI: Crime Scene Investigation on CBS.

Audrey Snyder of Roughstock gave the song a positive review, citing the group’s strong powerful vocals, and commenting, “The lyrics are definitely some of the most meaningful the group has done in a while” [3] A music video was released for the song, using the altered lyrics of the Olympic Mix.