| Grete Jenny | |
| Nationality: | Austrian |
| Sport: | Sprinting |
| Event: | 4 × 100 metres relay |
| Birth Date: | 27 February 1930 |
| Birth Place: | Kapfenberg, Republic of Austria |
| Death Place: | Bruck an der Mur, Austria |
Grete Jenny (27 February 1930 – 15 November 2015)[1] was an Austrian sprinter. She competed in the women's 4 × 100 metres relay at the 1948 Summer Olympics.[2]