"Ain't No Other Man" is a song recorded by the American singer and songwriter Christina Aguilera from her fifth studio album Back to Basics. Aguilera co-wrote the song with Kara DioGuardi, Charles Martin Roane, Harold Beatty and its producer DJ Premier. "Ain't No Other Man" is a pop, funk and R&B song that incorporates elements of soul, blues and jazz music. Lyrically, the song was inspired by her marriage to Jordan Bratman in 2005.
"Ain't No Other Man" was released as the lead single from Back to Basics on June 6, 2006, by RCA Records.