Huigang (died 838; r. 836–838) was the 43rd ruler of the Korean kingdom of Silla.
He was the grandson of King Wonseong and the son of ichan [ko] Kim Heon-jeong by Lady Podo.
He married Lady Munmok, who was the daughter of daeachan [ko][1] Chunggong.
[2] After the death of King Heungdeok in 836, Huigang and his uncle (Heungdeok's younger cousin) Kim Gyunjeong struggled for power.
[6] Huigang killed himself, and was buried on Sosan mountain in Gyeongju.