Mark Colbert Kelly (born 1961) is an Irish keyboardist and a member of the neo-prog band Marillion.

Kelly was born on 9 April 1961[citation needed] and was raised in Ireland until he moved to England with his parents in 1969.

[2] He was invited to join Marillion when they supported Chemical Alice, replacing founding keyboardist Brian Jelliman.

[4] Kelly has played keyboards with Travis for their headlining set at the Isle of Wight Festival (10–12 June 2005), and at T in the park in 2005.

He played Keyboards for Edison's Children's new album "In The Last Waking Moments..." (featuring fellow Marillion member Pete Trewavas and Eric Blackwood), for the song The "Other" Other Dimension as well as performing vocals with Steve Hogarth and Andy Ditchfield (DeeExpus) on the Edison's Children track The Awakening in 2011.