| Guan Xin | |
| Height Ft: | 6 |
| Height In: | 5 |
| Position: | Power forward |
| Birth Date: | 24 January 1987 |
| Birth Place: | Changchun, Jilin, China |
| League: | WCBA |
| Team: | Shanxi Flame |
| Number: | 9 |
| Career Start: | 2004 |
| Career End: | 2017 |
| Years1: | 2004–06 |
| Team1: | Guangdong Dolphins |
| Years2: | 2006–07 |
| Team2: | AZS AJP Gorzów Wielkopolski[1] |
| Years3: | 2007–13 |
| Team3: | Guangdong Dolphins |
| Years4: | 2013–17 |
| Team4: | Shanxi Flame |
Guan Xin (; born 24 January 1987) is a basketball player for the China women's national basketball team.[2] She was part of the squad for the 2012 Summer Olympics.[3]