Christian Mathias Cullen is a retired New Zealand rugby union player. He played most of his rugby at fullback for New Zealand, for the Hurricanes in the Super 12, and for Manawatu, Wellington and later Munster at provincial level. He was nicknamed the Paekakariki Express and was considered to be one of the most potent running fullbacks rugby has ever seen. With 46 tries scored in 58 tests, Cullen is the 9th-highest try-scorer in international rugby.