Diane Mary Craig (born 9 June 1949) is a Northern Irish-born Australian actress best known for her performances in film and television.

She attended the prestigious National Institute of Dramatic Arts (NIDA), but left after a year, making her debut in 1970 starring in the British Australian feature film Ned Kelly (1970), alongside Mick Jagger.

She has been married to award-winning Australian actor and comedian Garry McDonald since 1971 and has two children.