"My Last Name" is a song co-written and recorded by American country music artist Dierks Bentley. It was released in October 2003 as the second single from his self-titled debut album. The song peaked at number 17 on the U.S. Billboard Hot Country Songs chart, becoming Bentley's first single to miss the Top 10 and his only one until 2010's "Up on the Ridge", which peaked at number 21. Bentley wrote this song with Harley Allen.