| Dennis Sepp | |
| Birth Date: | 7 June 1973 |
| Birth Place: | Apeldoorn, Netherlands |
| Years2: | 1997–1998 |
| Years5: | 2007 |
| Clubs5: | Excelsior '31 |
| Caps2: | 3 |
| Goals2: | 0 |
Dennis Sepp (born 7 June 1973) is a Dutch former professional footballer who played for HSC '21, SC Enschede and Excelsior '31 in the Netherlands, as well as for Bradford City in England.