| Yin Chengxin | |
| Strokes: | Synchronised swimming |
| Birth Date: | 5 February 1995 |
| Birth Place: | Wuhan, Hubei, China |
| Height: | 1.68 m |
| Weight: | 58 kg |
Yin Chengxin (born 5 February 1995) is a Chinese competitor in synchronised swimming.
She won two silver medals at the 2015 World Aquatics Championships, and one gold medal at the 2014 Asian Games.