| Glyn Williams | |
| Fullname: | Glyndwr James John Williams |
| Birth Date: | 1918 11, df=y |
| Birth Place: | Maesteg, Wales |
| Position: | Defender |
| Years1: | 1946–1952 |
| Clubs1: | Cardiff City |
| Caps1: | 144 |
| Goals1: | 0 |
| Nationalyears1: | 1951 |
| Nationalteam1: | Wales |
| Nationalcaps1: | 1 |
| Nationalgoals1: | 0 |
Glyndwr James John Williams (3 November 1918 – 6 May 2011) was a Welsh professional footballer.
Born in Maesteg, Williams began his career playing for Caerau as an amateur, helping them win the Welsh Amateur Cup in 1946 and, despite only having played a handful of games, following the return of the English Football League after World War II he signed for Cardiff City. He made his debut in January 1947 in a 1–0 win over Aldershot, during a season in which Cardiff gained promotion to Division Two.[1] His versatility, being able to play anywhere in defence, saw him become a regular for the side and at the end of the 1950–51 season his form lead to his first and only Wales cap when he played against Switzerland.[2] However, at the end of the following season, he was released by the club and returned to non-league Welsh football.[3]