Roman Griffin Davis (born 5 March 2007) is an English actor. He is best known for his title role in the film Jojo Rabbit (2019), for which he was nominated for a Golden Globe Award and won a Critics' Choice Award.

Davis was born on 5 March 2007 in London. He is the son of cinematographer Ben Davis and writer-director Camille Griffin. He lives with his parents and brothers, twins Gilby and Hardy, in East Sussex. He went to school at Cumnor House and Cranbrook grammar school, Sussex, until 2020. Davis made his acting debut in the 2019 satirical black comedy film Jojo Rabbit directed by Taika Waititi. His twin brothers are also in the film as Hitler Youth clones. Davis was nominated for various awards for his performance in Jojo Rabbit and won the Critics' Choice Movie Award for Best Young Performer and the Washington D.C. Area Film Critics Association Award for Best Breakthrough Performance. He starred in the 2021 comedy Silent Night directed and produced by his mother Camille Griffin.