Haku may refer to:
People
- Haku (artist)
- Haku (surname)
- Haku (band)
- Haku (wrestler) (Tonga Fifita, born 1959), Tongan professional wrestler
Characters
- Haku (Naruto), a character in Naruto media
- Haku, a character in the 2001 animated movie Spirited Away
Places
- Haku, Iran
- Mount Haku, Japan
- Haku, Bagmati, Nepal
- Haku, Karnali, Nepal
Adornment
- Lei (garland), garland worn on the head
Animals
- Seriola lalandi, in the Māori language