Yu Qian (simplified Chinese: 于谦; traditional Chinese: 于謙; pinyin: Yú Qiān; 1398–1457), courtesy name Tingyi (廷益), art name Jie'an (節庵), was a Chinese official who served under the Ming dynasty. Under Emperor Yingzong, he worked in the Ministry of War, eventually becoming a vice minister. He distinguished himself in the Tumu Crisis, leading the defense of the imperial capital against the Mongols, and was promoted to the position of Minister of War. For the next eight years, he remained the most influential member of the government of the new Jingtai Emperor. In January 1457, Yingzong returned to power and Yu Qian was promptly executed.

Yu Qian was born in Qiantang County, Hangzhou, Zhejiang. He started his career in the Ming civil service after obtaining the position of a jinshi (進士; successful candidate) in the imperial examination in 1421. He helped to suppress a rebellion by the prince Zhu Gaoxu in 1426 and earned the favour of the Xuande Emperor (r. 1425–1435), who appointed him as the Grand coordinator of Shanxi and Henan. During the reign of the Zhengtong Emperor (r. 1435–1449), he offended the influential court eunuch Wang Zhen and ended up being imprisoned. However, he was released later, reinstated as an official, and further promoted to serve as the Minister of War.

In 1449, Yu Qian played an important role in leading the Defense of Beijing from attacks by the Oirat Mongols, who had earlier captured the Zhengtong Emperor at the Battle of Tumu. The Jingtai Emperor (r. 1449–1457), who succeeded the Zhengtong Emperor, appointed Yu Qian as the Crown Prince's Guardian and Tutor. In 1457, the former Zhengtong Emperor, who had returned after he was released by the Mongols, seized power from the Jingtai Emperor in a coup and restored himself to the throne as the Tianshun Emperor (r. 1457–1464). Yu Qian was accused of treason and executed. He was later posthumously rehabilitated by the Chenghua Emperor (r. 1464–1487) and given the posthumous name Sumin (lit. "Stern and Suffering") by the Hongzhi Emperor, afterwards changed into "Zhongsu" (lit."loyal and stern") by the Wanli Emperor (r. 1572–1620).^[1] There are memorial halls and shrines built in Beijing and Hangzhou to commemorate and honour Yu Qian.

• History of Beijing