Zaixun (20 May 1885 – 30 March 1949), courtesy name Zhongquan, art name Chiyun, also known as Tsai Hsun in early references, was a Manchu noble of the late Qing dynasty.

In 1900, Zaixun's predecessor, Zaiyi, who succeeded Yizhi as "Prince Rui of the Second Rank" (later renamed to "Prince Duan of the Second Rank"), was stripped of his title of nobility and exiled to Xinjiang for his role in the Boxer Rebellion.

Two years later, Zaixun succeeded Zaiyi as a beile of the Prince Rui peerage.

In 1909, Zaixun was appointed as an acting Navy Minister (海軍大臣) in the Imperial Cabinet headed by Prince Qing.

After the Xinhai Revolution overthrew the Qing dynasty, he lived the rest of his life in retirement in Beijing and Tianjin.