Peter Leo McKenzie () was a New Zealand actor. He spent his early days in Whanganui and received his secondary education at St Augustine's College. He is best known for his portrayal as Elendil in Peter Jackson's '. He also appeared in Jackson's King Kong.
His wife, Deirdre Tarrant, was a choreographer who founded Footnote Dance. Their son, Bret, was a member of the comedy duo Flight of the Conchords, and also appears as an unnamed Elf (popularly known as Figwit) in The Fellowship of the Ring, and '.
He was also an owner and trainer of racehorses, including Sculptor who won the 2007 Saab Quality at Flemington and qualified to run in the 2007 Melbourne Cup.