Xiao Baojuan (483–501), née Xiao Mingxian, commonly known by his posthumously demoted title of Marquess of Donghun, courtesy name Zhizang, is an emperor of the Chinese dynasty Southern Qi.

He is known as a violent ruler who executes high level officials at his whim, and this draws several major rebellions, the last of which, by his general Xiao Yan, overthrows him and eventually his dynasty, with Xiao Yan establishing Liang Dynasty.

He is known as the Marquess of Donghun because Xiao Yan demoted him to that title after he was killed in a siege of the capital Jiankang.