Nathaniel Dean is an Australian actor and voice over artist. His most recent performances include Sergeant Hallett in Ridley Scott's Alien: Covenant, as well as colonial Australian settler William Thornhill in The Secret River for the Sydney Theatre Company.

In 2002, he won an AACTA Award for Best Supporting Actor for his role in Tony Ayres' acclaimed Walking on Water.

Dean has performed in numerous stage plays, TV series, short films and Australian feature films. He has been the voice of numerous advertising campaigns and productions including Recipe to Riches, the AFL, Victoria Bitter and Holden.