| Birth Date: | 1943 10, df=y |
| Birth Place: | Böhmisch Kamnitz, Germany (present-day Česká Kamenice, Czech Republic) |
| Height: | 1.65m (05.41feet) |
| Weight: | 61kg (134lb) |
| Sport: | Swimming |
| Club: | SC DHfK |
| Show-Medals: | yes |
Gisela Weiß (later Engelhardt, born 16 October 1943) is a retired German swimmer. She competed at the 1960 Summer Olympics in the 400 m and freestyle events and won a bronze medal in the relay. Between 1959 and 1961, she won three consecutive national titles in the freestyle relay.
Weiß ended her competitive swimming career in 1963 and began studying medicine. In 1964, she married Karl-Heinz Engelhardt, a multiple East German champion in swimming.
After graduating, Weiß worked as a doctor, first at a sports school in Leipzig, and after the German unification in a rehabilitation clinic.