Zeng Guoquan (12 October 1824 – 13 November 1890), courtesy name Yuanfu, art name Shuchun, was a Chinese official and military leader of the late Qing dynasty.

He served in the Xiang Army, a standing military force organised by his brother to counter the Taiping rebels, and was nicknamed "Ninth Marshal" (九帥).

In 1856, he managed to recruit 3,000 troops from Hunan to reinforce Qing imperial forces at Ji'an, Jiangxi Province.

In 1860, Zeng and his troops besieged Anqing and repeatedly fended off rebel reinforcements led by Chen Yucheng.

In 1875, Zeng returned to politics and consecutively served as the Provincial Governor of Shaanxi and Shanxi provinces, and Viceroy of Liangguang.