| Rika Geyser | |
| Nationality: | South African |
| Sport: | Rowing |
| Birth Date: | 28 August 1978 |
| Birth Place: | Pretoria, South Africa |
Adriana Hendrika Geyser (born 28 August 1978) is a South African rower. She competed in the women's single sculls event at the 2008 Summer Olympics.[1]