| Roy Day | |
| Fullname: | Charles Roy Day |
| Birth Date: | 19 January 1905 |
| Birth Place: | Sebastopol, Victoria |
| Death Place: | Sunshine, Victoria |
| Originalteam: | Sunshine |
| Statsend: | 1927 |
| Years1: | 1926–27 |
| Games Goals1: | 4 (4) |
| Years2: | 1927 |
| Games Goals2: | 2 (0) |
| Games Goalstotal: | 6 (4) |
Charles Roy Day (19 January 1905 – 5 January 1991) was an Australian rules footballer who played with North Melbourne and Footscray in the Victorian Football League (VFL).[1]