Christopher Kirby is an Australian-American actor. He is known for his performance in the 2012 film Iron Sky. Other films he has appeared in include The Matrix Reloaded (2003) and Star Wars: Episode III – Revenge of the Sith (2005).

He is best known for his role as Mitch Hanson on "The Saddle Club". Having permanently relocated to Australia in late 1999, Kirby frequently portrays American characters in Australian film and television productions. He is perhaps best-known to international audiences as Mauser from The Matrix trilogy of films.