Feng Hong (died 438), courtesy name Wentong, formally Emperor Zhaocheng of (Northern) Yan , was the last emperor of the Chinese state Northern Yan.

He seizes the throne in 430 when his brother Feng Ba (Emperor Wencheng) is ill, and he uses the title "Heavenly Prince" (Tian Wang).

During his reign, Northern Yan grows increasingly smaller and weaker in light of repeated attacks by rival Northern Wei, and in 436 he evacuates his state and flees to Goguryeo, ending Northern Yan.

Once in Goguryeo, however, he assumes the role of Goguryeo's suzerain (a status he had claimed earlier).

King Jangsu of Goguryeo, unable to stand Feng Hong's antics, kills him in 438 although, curiously, he gives Feng Hong a posthumous imperial name.