Xu Junchao (born 22 September 1988) is a Chinese former professional tennis player.
Xu qualified for the main draw of the 2008 China Open, an ATP Tour tournament in Beijing, losing in the first round to Lu Yen-hsun. He represented China at the 2011 Summer Universiade.
| 1. | Indonesia F5, Jakarta | Hard | Elbert Sie | 6–2, 6–1 |
| 1. | Spain F30, Bakio | Hard | Gong Maoxin | Richard Brooks Juan-Miguel Such-Pérez | 6–2, 6–3 | |
| 2. | China F3, Taizhou | Hard | Lu Hao | Gong Maoxin Zeng Shaoxuan | 6–7(3), 6–4, 10–4 |
|
|