Haggai (disambiguation)
Haggai is one of the Biblical minor prophets.
Haggai or Hagai may also refer to:
- Book of Haggai, the book of the Bible attributed to the prophet Haggai
 - Haggai, Missouri, ghost town, United States
 - Beit Hagai, officially just Hagai, a religious Israeli settlement in the West Bank
 - Hagai Levi, Israeli film and television director
 - Hagai Shaham, Israeli violinist
 - Hagai Zamir, Israeli paralympic champion
 - Haggai Ndubuisi, Nigerian gridiron football player