Jock Johnstone

John Chalmers Johnstone (1898 – 1936) was a Scottish footballer who played for Dundee, Aston Villa and Reading, mainly as a right half.

He played twice in Aston Villa's run to the 1924 FA Cup Final, but did not take part in the match itself; this was indicative of his struggles over several seasons to be selected ahead of Frank Moss and George Blackburn, both of whom were England internationals.