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.
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.