Leon Dean Johnson (born 10 May 1981) is a professional footballer who played as a defender, most notably for Wycombe Wanderers.

He made his professional debut when he started the Football League Trophy match for Southend at home to Cheltenham Town in 1999.

By the end of January, Johnson had established himself as a decent defender and he played in a total of 26 games and scored his first goal in a 1–1 draw with Chesterfield at the Recreation Ground.

However, as Southend only finished 12th in League One, cost-cutting meant that Johnson was released from the Roots Hall club on a free transfer.

Johnson scored his first goal for Gillingham against Milton Keynes Dons on New Year's Eve 2005 in a 3–0 win at Priestfield when he headed home Andrew Crofts' flick on following Michael Flynn's long ball.