Psycho Man is a single by the heavy metal band Black Sabbath. It was originally released on the Reunion album in 1998, and was the first of two new singles from the album, the other being "Selling My Soul". The song reached number 3 on the US Mainstream Rock Chart. The song was later included in Ozzy Osbourne's 2005 box set Prince of Darkness. The music and lyrics were written by singer Ozzy Osbourne and guitarist Tony Iommi. Psycho Man and Selling My Soul are the only Black Sabbath songs to be credited to these two members.