Sean Francis O'Sullivan (born 29 April 1994) is an English former professional snooker player.
O'Sullivan turned professional in 2012 after qualifying via Event 2 of the Q School and gained a two-year tour card for the 2012/13 and 2013/14 snooker seasons.
In the event, he beat Christopher Keogan 4–1, Nick Dyson 4–0, Mohammed Al Shaikh from Bahrain 4–1 and Michael Wild 4–3, before seeing off Ryan Causton 4–1 in the quarter-finals.