Sun Deng (209 – May or June 241),[a] courtesy name Zigao, was an imperial prince of the state of Eastern Wu during the Three Kingdoms period of China.
He was the eldest son of Sun Quan, Eastern Wu's founding emperor, and was crown prince from 229 until his death in 241.
When Cao Pi, emperor of the state of Cao Wei, appointed Sun Quan the King of Wu in 221, he enfeoffed Sun Deng as a marquis with a fief of ten thousand households (万户侯), and offered him the position of East General of the Household (東中郎將).
Sun Quan ordered Zhuge Ke (諸葛恪), Gu Tan (顧譚), Zhang Xiu (張休), Chen Biao (陳表)[6] and others to serve as the Crown Prince's attendants and personal staff.
In 234, Sun Quan personally led a major attack against Wei's border city Hefei.
However, Sun Deng never succeeded his father, dying from illness aged 33 (by East Asian reckoning).