| Val Duncan | |
| Fullname: | Claude Valentine Duncan |
| Birth Date: | 4 May 1884 |
| Birth Place: | Sale, Victoria |
| Death Place: | Melbourne, Victoria |
| Originalteam: | Malvern |
| Height: | 177 cm |
| Statsend: | 1908 |
| Years1: | 1908 |
| Games Goals1: | 11 (0) |
Claude Valentine Duncan (4 May 1884 – 20 May 1960) was an Australian rules footballer who played with Fitzroy in the Victorian Football League (VFL).[1]