Xiao Dung (died 552), courtesy name Yuanji, sometimes known by his pre-ascension title of Prince of Yuzhang, is briefly an emperor of the Chinese Liang Dynasty.

In 551, with the general Hou Jing in control of the imperial government at the capital Jiankang, Hou, wanting to show off his strength, deposes Xiao Dong's granduncle Emperor Jianwen and replaces him with Xiao Dong, the grandson of Emperor Jianwen's older brother Xiao Tong, who was originally the founder Emperor Wu's crown prince.

During his brief reign, Xiao Dong is entirely under Hou's control.

Just two and a half months after Xiao Dong becomes emperor, Hou forces him to yield the throne to Hou, who takes the throne as the Emperor of Han.

In 552, troops under Wang Sengbian, a general loyal to Xiao Dong's granduncle Xiao Yi, retake Jiankang, and the general Zhu Maichen, under Xiao Yi's instructions, throw Xiao Dong and his two brothers into the Yangtze River to drown.