| Vagn Kastrup | |
| Nationality: | Danish |
| Sport: | Sailing |
| Birth Date: | 18 May 1905 |
| Birth Place: | Randers, Denmark |
| Death Place: | Aabybro, Denmark |
Vagn Kastrup (18 May 1905 - 8 July 1976) was a Danish sailor. He competed in the 8 Metre event at the 1936 Summer Olympics.[1]