Mark Denis Lizotte (born 31 May 1966) is an American-born Australian singer-songwriter and musician, who has released material under the name Diesel, Johnny Diesel, as leader of band Johnny Diesel & the Injectors, and as a solo performer, as well as under his birth name. Two of his albums reached No. 1 on the Australian Recording Industry Association (ARIA) Albums Charts, Hepfidelity in 1992 and The Lobbyist in 1993.

Since 1987, Lizotte, has played on several albums by his brother-in law, Australian rock singer, Jimmy Barnes. Although better known as a singer-songwriter and guitarist, Lizotte is also competent on bass guitar, drums, percussion and keyboards; and has also produced an album by Richard Clapton and one by Vika and Linda Bull. He has won six ARIA Music Awards with three for 'Best Male Artist' in 1993, 1994 and 1995.