"Loner" is a song by the English heavy metal band Black Sabbath. It is the third single from their 2013 album 13, the first being "God Is Dead?". Although the album version did not receive a chart position, a live version of the song was officially released as a single via the Black Sabbath's YouTube channel on 17 October 2013.
This live version, featuring touring-only member Tommy Clufetos on drums, was recorded in Melbourne, Australia at the beginning of May during their reunion world tour. The performance was the world premier of the song. As well as being officially released on YouTube, the video was also featured along with the rest of the concert on the band's album and film "Live... Gathered in Their Masses".