Yang Tong
| Emperor Gong of Sui 隋恭帝 | |||||||||
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| Emperor of the Sui dynasty (Eastern) | |||||||||
| Reign | 22 June 618 – 23 May 619 | ||||||||
| Successor | None (dynasty destroyed) | ||||||||
| Born | Between 603 and 605 | ||||||||
| Died | June or July 619 | ||||||||
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| House | Yang | ||||||||
| Dynasty | Sui | ||||||||
| Father | Yang Zhao, Crown Prince Yuande | ||||||||
| Mother | Consort Liu | ||||||||
Yang Tong (Chinese: 楊侗; 600s – June or July 619), known in traditional histories by his princely title of Prince of Yue (越王) or by his era name as Lord Huangtai (皇泰主), also known by his posthumous name as the Emperor Gong of Sui (隋恭帝), courtesy name Renjin (仁謹), was an emperor of China's Sui dynasty. During the disturbances that permeated throughout the Sui state late in the dynasty's history, his grandfather Emperor Yang left him in charge of the eastern capital Luoyang, and after Emperor Yang was killed by the general Yuwen Huaji in 618, the Sui officials in Luoyang declared Yang Tong emperor. However, soon one of those officials, Wang Shichong, seized power, and in 619 had Yang Tong yield the throne to him, ending the Sui dynasty. Soon, he was killed on Wang's orders.