| Zhu Zijun | |
| Succession: | Prince of Qin |
| Reign: | 1424–1426 |
| Reign-Type: | Tenure |
| Predecessor: | Zhu Zhigeng, Prince Xi |
| Successor: | Zhu Zhiqie, Prince Kang |
| Succession2: | Prince of Weinan |
| Reign-Type2: | Tenure |
| Reign2: | 1403–1424 |
| Birth Date: | 1403 |
| Posthumous Name: | Prince Huai of Qin (秦懷王) |
| House: | Zhu |
| Father: | Zhu Shangbing |
| Mother: | Lady Tang |
Zhu Zijun (朱志均, 1403–1426) was a Chinese prince of the Ming dynasty. He was the son of Zhu Shangbing, Prince Yin of Qin, and the elder brother of Zhu Zhigeng, Prince Xi of Qin. In 1403, he was made Prince of Weinan (渭南王), and in 1424, he inherited the title of Prince of Qin.
Zhu Zhijun died in 1426 at the age of 24 and was given the posthumous title of Huai (懷). His fiancée, Lady Zhang, entered the palace and vowed to remain chaste for the rest of her life, as he had no son. His younger full-brother, Zhu Zhiqie, succeeded him.