| Roy Millen | |
| Fullname: | Roland Herbert Millen |
| Birth Date: | 12 October 1893 |
| Birth Place: | Prahran, Victoria |
| Death Place: | Preston, Victoria |
| Height: | 173 cm |
| Weight: | 72 kg |
| Position: | Wingman |
| Statsend: | 1923 |
| Years1: | 1913–23 |
| Club1: | Fitzroy |
| Games Goals1: | 117 (9) |
Roland Herbert 'Roy' Millen (12 October 1893 – 30 May 1946) was an Australian rules footballer who played for Fitzroy in the Victorian Football League (VFL).
Although primarily a wingman, Millen was also used as a centreman at times during his career. He was a member of Fitzroy's premiership team in 1917 and participated in their losing Grand Final the following season.
In the 1929 VFL season he officiated as a field umpire for one match.