I Ain't No Quitter

"I Ain't No Quitter" is a song by Canadian country-pop singer Shania Twain. It was released on May 2, 2005 to country radio and physically in Europe on July 12, 2005 as the third and final single from her first compilation album Greatest Hits (2004). Like mostly all of her discography at the time, the song was written by Twain and then-husband Robert John "Mutt" Lange, who also produced the track. "I Ain't No Quitter" lyrically is about Twain sticking around with an overconfident and brash man. The song is regarded as a fan favorite among Twain's discography.

The song reached number 45 on the Hot Country Songs. She performed it during her Rock This Country Tour (2015), as well as her Vegas residencies Still the One (2012) and Come On Over (2024).