Bai
- BA-I
- BAI (file format)
- BAI (organization)
- BAI Communications
- Bachelor of Engineering
- Badminton Association of India
- Bafaw-Balong language
- Bai (decoration)
- Bai (house)
- Bai (suffix)
- Bai (surname)
- Bai Bing (disambiguation)
- Bai Brands
- Bai Di (disambiguation)
- Bai Island
- Bai Lang (disambiguation)
- Bai Prefecture
- Bai language
- Bai language (South Sudan)
- Bai people
- Bai people (South Sudan)
- Bai, Iran
- Bai, Nepal
- Baicheng County
- Bais (disambiguation)
- Bamileke languages
- Banco Angolano de Investimentos
- Battlefield air interdiction
- Beck Anxiety Inventory
- Board of Audit and Inspection
- Body adiposity index
- Brain-specific angiogenesis inhibitor 1
- Brittany Ferries
- Broadcasting Authority of Ireland
- Bureau of Animal Industry
- Băi
- Marcus Bai
- Matt Bai
- Mbeli Bai
- Obai
- Pai (surname)
- Sakata language
- Seremaia Bai
- Vidra, Alba
- WBAI