| Frank McDiarmid | |
| Fullname: | Frank McDiarmid |
| Birth Date: | 1880 |
| Position: | Full Back |
| Years1: | –1906 |
| Clubs1: | Dundee |
| Years2: | 1906–1907 |
| Clubs2: | Tottenham Hotspur |
| Caps2: | 7 |
| Goals2: | 0 |
| Years3: | 1907–1911 |
| Clubs3: | Northampton Town |
| Caps3: | 138 |
| Goals3: | 18 |
| Years4: | 1911–19?? |
| Clubs4: | Distillery |
Frank McDiarmid (1880 – when?) was a Scottish professional footballer who played for Dundee, Tottenham Hotspur and Northampton Town.
McDiarmid started his career in Scotland with Dundee and played for the Scottish League against in the Irish League in February 1902. McDiarmid joined Tottenham Hotspur in 1906 and played for only one season with the club. His debut with Tottenham was a home match in the Southern League against West Ham United on 1 September 1906. Spurs lost the game 2–1. McDiarmid moved to Northampton Town where he spent four seasons.