title: Mark O'Neill
text: # Mark O'Neill
  
  Mark O'Neill may refer to:
  
  * Mark O'Neill (rugby league) (born 1975), Australian rugby league footballer of the 1990s and 2000s
  * Mark A. O'Neill (born 1959), British entomologist and computer scientist
  * Mark O'Neill (TV personality) (born 1984), Irish television personality and producer
  * Mark O'Neill (cricketer) (born 1959), Australian cricketer
  