| Cheng Mengyin | |
| Nationality: | Chinese |
| Birth Date: | 20 May 1995 |
| Height: | 1.72 m |
| Weight: | 57 kg |
| Country: | China |
| Sport: | Rowing |
| Event: | Lightweight quadruple sculls |
Cheng Mengyin (born 20 May 1995) is a Chinese rower.
She won a medal at the 2019 World Rowing Championships.[1]