Heongang (c.861–886), personal name Kim Chŏng, was the 49th to rule the Korean kingdom of Silla.
[citation needed] Heongang was the eldest son of King Gyeongmun; his mother was Queen Munui.
[citation needed] He had no legitimate heir, but did leave a son (later King Hyogong) by Lady Uimyeong.
In 879, Heongang was faced with the rebellion of a high official, his Ilgilchan Sin Hong.
[citation needed] Heongang was buried to the northeast of Borisa temple in Gyeongju.