Mark Whitmore Evans (born 2 March 1956) is an Australian bass guitarist who was an early member of hard rock band AC/DC from March 1975 to June 1977. His playing featured on their albums T.N.T, High Voltage, Dirty Deeds Done Dirt Cheap, Let There Be Rock and '74 Jailbreak. Evans has played for numerous other groups, sometimes on lead guitar, including Finch (aka Contraband), Cheetah, Swanee, Heaven and The Party Boys. As from August 2011, Evan's autobiography, Dirty Deeds: My Life Inside/Outside of AC/DC was due in October.