| Billy Thomas | |
| Birth Date: | 20 August 1903 |
| Birth Place: | Wales |
| Position: | Forward |
| Clubs1: | Newport County |
| Nationalyears1: | 1930 |
| Nationalteam1: | Wales |
| Nationalcaps1: | 2 |
| Nationalgoals1: | 0 |
William Rees Thomas (20 August 1903 – 30 November 1991) was a Welsh footballer.
Thomas attained two caps for the Wales national football team in 1930 against England and Scotland. Thomas played club football for Newport County.[1]