| Cornelia Dumler | |
| Nickname: | Conny |
| Nationality: | German |
| Birth Date: | 22 January 1982 |
| Birth Place: | Feuchtwangen, West Germany |
Cornelia Dumler (born January 22, 1982, in Feuchtwangen), nicknamed "Conny", is a volleyball player from Germany; she played as an outside-hitter for the German Women's National Team since 2002.
She represented her native country in at the 2004 Summer Olympics, finishing in ninth place, and at the 2003 Women's European Volleyball Championship, finishing third.