Allen Sloan was a Scottish rugby union player.
He was capped nine times between 1914 and 1921 for . He also played for Edinburgh Academicals.
He was the father of Donald Sloan, who was also capped for Scotland.
Sloan's father Dr Allen Thomson Sloan was a general practitioner in Edinburgh. Sloan followed his father into general practice. In 1924 he was elected a member of the Harveian Society of Edinburgh. Sloan died in 1952.