John Blair (1910 – 1975) was a Scottish footballer, who played as a centre-half for Motherwell and Scotland.
Blair played a few games for the Motherwell team that won the Scottish league championship in 1931–32 and he played in two Scottish Cup Finals (a defeat to Celtic in 1933, and a loss to Clyde in 1939). He also represented the Scottish League twice.
In early November 1945, the Clapton Orient programme reported that Blair would be joining the O's as both a player and coach. He made four wartime appearances for Orient.
His nephew Charlie Cox was also a footballer, and also won silverware with Motherwell.