| Personal information | |||
|---|---|---|---|
| Place of birth | Glasgow, Scotland | ||
| Position(s) | Right half | ||
| Senior career* | |||
| Years | Team | Apps | (Gls) |
| Vale of Clyde | |||
| 1906–1907 | Queen's Park | 31 | (2) |
| 1907–1910 | St Mirren | 79 | (1) |
| International career | |||
| 1907 | Scotland | 1 | (0) |
| *Club domestic league appearances and goals | |||
William Key was a Scottish footballer who played as a right half.