Warrick Lee "Mac" McCallion (26 July 1950 – 14 March 2018) was a New Zealand rugby union player and coach. McCallion served in the Royal New Zealand Infantry Regiment of the New Zealand Army during the Vietnam War. Aged 17, and having lied about his age to enlist, he was a member of the secret Faceless 26 Ghost Unit of the New Zealand Special Air Service. After the war, he played for Counties from 1976 to 1980, and made eight appearances for New Zealand Māori in the late 1970s.