Atholl Henry McKinnon (20 August 1932 in Port Elizabeth, Cape Province – 2 December 1983 in Durban, Natal) was a South African cricketer who played in eight Tests from 1960 to 1966.

McKinnon attended Grey High School, a school famous for its sporting achievements.^[1]

A left-arm spinner and right-handed batsman, he toured England with the South African teams in 1960 and 1965, the only player to go on both tours.^[2] He represented Eastern Province in the Currie Cup from 1952–53 to 1962–63, and Transvaal from 1963–64 to 1968–69.

He later became a coach. He died of a heart attack in 1983 while managing the unofficial West Indian team in South Africa.^[2]