Gongsun Hong (258-291) was a general of Jin China during the late 3rd century AD. He and Qin Sheng served as assistants to Sima Wei, and, in 291 AD, they convinced Empress Jia Nanfeng that Prince Sima Liang and Wei Guan were plotting to depose the mentally-ill Emperor Sima Zhong, leading to Sima Liang's downfall. However, Jia Nanfeng later accused Sima Wei of plotting to overthrow the Emperor and had him and his subordinates executed for treason.