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Sun Jiao (died January or February 220),^[a]courtesy nameShulang, was a cousin ofSun Quan, a Chinese warlord who lived during the lateEastern Han dynasty and later became the founding emperor of the state ofEastern Wu in theThree Kingdoms period.

Sun Jiao was the third son ofSun Jing, a younger brother of Sun Quan's fatherSun Jian. Along with the rest of his family, Sun Jiao first served as a military general underSun Ce (Sun Jian's eldest son and successor) and then under Sun Quan (Sun Ce's younger brother and successor). After theBattle of Ruxu in 213, his leadership skills were highly praised by all with whom he served.

In reward for his deeds at Ruxu, he was chosen to succeedCheng Pu as commander of Xiakou when Cheng was promoted to a higher position. In addition, he was given commands of two prominent Wu generals who had died: his elder brotherSun Yu andHuang Gai.

Once, while drinking with fellow commanderGan Ning, Sun Jiao made a comment under the influence of alcohol that deeply offended Gan Ning, who sent a letter to Sun Quan requesting a transfer from Sun Jiao's command toLü Meng's. As his adviserZhuge Jin was Sun Jiao's closest friend, Sun Quan sent him to admonish Sun Jiao for offending Gan Ning. Thus reprimanded, Sun Jiao apologised to Gan Ning, and the two became close friends.

Sun Jiao earned merits in the 215 campaign onJing Province, in which Sun Quan's forces overran several ofLiu Bei's commanderies in the province. In 219, Sun Jiao participated in asecond invasion of Liu Bei's holdings in Jing Province. When preparing for the battle, Sun Quan intended for Sun Jiao and Lü Meng to hold joint command over the military, much as his generalsZhou Yu and Cheng Pu had during theBattle of Red Cliffs. Lü Meng, however, advised Sun Quan against this arrangement, as it could lead to dissension in the ranks, and asked him to choose whomever he saw fit for the position. In the end, Lü Meng was chosen, and Sun Jiao participated under his command. There is no record of Sun Jiao feeling slighted by this arrangement.

The campaign was a resounding success, with Liu Bei's trusted associate and prized general,Guan Yu, being captured and executed. Sun Jiao earned numerous merits in the campaign, but not long after Guan Yu's execution, he died of sudden illness.

• Lists of people of the Three Kingdoms

• Chen, Shou (3rd century).Records of the Three Kingdoms (Sanguozhi).
• de Crespigny, Rafe (1990).Generals of the South: the foundation and early history of the Three Kingdoms state of Wu. Canberra: Faculty of Asian Studies, Australian National University.ISBN 0-7315-0901-3.
• Pei, Songzhi (5th century).Annotations to Records of the Three Kingdoms (Sanguozhi zhu).

• 2nd-century births
• 220 deaths
• Generals under Sun Quan

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• Year of birth unknown