Haewun is one of the main teachings of Jeung San Do. Hae (解) means "release" or "solve" and wun (怨) means "grudge" or "grief". Therefore, a literal meaning of haewun is resolution of bitterness and grief.
Haeun can refer to:
- Haeun (Jeungsando), a principle of the Jeungsando faith.
- Choe Chi-won, a Silla philosopher sometimes known by his pen name Haeun
- Haeundae-gu, Busan
- Kim Hae-woon (born 1973), South Korean footballer
- Ha-eun, Korean feminine given name