Martin O'Donnell (born 4 June 1986) is an English professional snooker player. He gained a two-year place on the main snooker tour by coming through Q School in 2012.
As an amateur, O'Donnell played in all 12 of the Players Tour Championship events during the 2010/2011 season. He reached the second round on three occasions, but could not progress any further, however, in Event 3 he defeated former world champion, Shaun Murphy 4–3. O'Donnell finished 109th on the Order of Merit.
O'Donnell's first match as a professional was in qualifying for the Wuxi Classic. He beat David Grace 5–2, before losing to Alfie Burden 3–5.