John Clark is a former Scottish footballer known for his defensive skills. He was born on 18th March 1938 in Glasgow, Scotland. Clark primarily played as a center-back and had a notable career with Celtic FC, where he was part of the team that won the European Cup in 1967. After his time at Celtic, Clark also played for Dunfermline Athletic and St. Johnstone. He earned recognition for his leadership on the field and contributed significantly to his teams' successes during his playing career. Clark later transitioned into coaching and management roles in football.