He was born in Vancouver, British Columbia, to British parents Sue Bailey, who works for the British Columbia film commission, and Richard Cudmore, a doctor. He was raised in Squamish, British Columbia. Cudmore is the middle of three boys, all over 6'5" tall.
Cudmore attended Gannon University and was a member of the football team (2000–02). Cudmore is a former forward for the Capilano Rugby Football Club in Vancouver.
His older brother Jamie is a member of the Canadian Rugby World Cup team. His younger brother, Luke, also plays for Capilano RFC. Daniel also auditioned for the title role in Superman Returns, but lost it to Brandon Routh.
|2004||A Very Cool Christmas|
|2005||Are We There Yet|
|2005||Alone In The Dark||Agent Barr|
|2006||X-Man: The Last Stand||Colossus|
|2011||Breaking Dawn - Part 1||Felix|
|2012||Breaking Dawn - Part 2||Felix|
|2012||Halo 4: Forward Unto Dawn||Master Chief|