Nick Cullen (born 10 April 1984) is an Australian professional golfer who plays on the PGA Tour of Australasia. Cullen played on the Canadian Tour in 2010 and has played on the PGA Tour of Australasia since 2011. He earned his first professional win at the Enjoy Jakarta Indonesia Open on the OneAsia Tour in March 2012. He also qualified for the 2012 Open Championship through International Final Qualifying. In August 2013, Cullen won his first title on the PGA Tour of Australasia at the Isuzu Queensland Open. He beat countryman Peter O'Malley by five strokes.