| Sonja Greinacher | |
| Height M: | 1.90 |
| Nationality: | German |
| Birth Date: | 1 July 1992 |
| Birth Place: | Essen, North Rhine-Westphalia, Germany |
| College: | Gonzaga (2011–2015) |
Sonja Greinacher, also known as Sunny Greinacher (born 1 July 1992),[1] is a German basketball player. She represented Germany at the 2024 Summer Olympics, winning the gold medal in the 3x3 event.