"This Ain't Nothin" is a song written by Chris DuBois and Kerry Kurt Phillips, and recorded by American country music artist Craig Morgan. It was released in January 2010 as the fourth single from his album That's Why. It is only available on later presses of the album. The song entered the top 40 on the U.S. country charts on February 2, 2010. It is his seventeenth single release.