| Liu Jianjun 刘坚军 | |
| Birth Date: | 1969 1, df=y |
| Birth Place: | Ningbo, Zhejiang, China |
| Height: | 1.8 m |
| Event: | Doubles |
| Country: | China |
| Handedness: | Right |
| Bwf Id: | 9AB43358-0382-4C00-8AEC-66980D45BB16 |
Liu Jianjun (; born January 5, 1969 Ningbo) is a male Chinese badminton player who played internationally in the 1990s.
Liu shared a number of mixed doubles titles on the world circuit. He won the China (1991), French (1992), and Thailand (1993) Opens with Wang Xiaoyuan, and the Asian Championships (1995) with Ge Fei. Liu was a bronze medalist at the 1996 Atlanta Olympics with yet another partner, Sun Man.