Keith John Aldridge (born 13 March 1935) was an English cricketer who played first-class cricket for Worcestershire in England and for Tasmania in Australia. He was born in Evesham, Worcestershire. Aldridge was a right-arm fast-medium bowler who took more than 250 first-class wickets. As a right-handed tail-end batsman he offered little, with a career batting average of under seven. His career in England was marked by controversy over his bowling action, though he later bowled in Australia without incident.