Boi
- 2GO (cargo airline)
- Bank of India
- Bank of Ireland
- Baudilus
- Big Boi
- Board of Investment (Sri Lanka)
- Board of Investment of Mauritius
- Board of Investments (Philippines)
- Boi (film)
- Boi (music)
- Boi (slang)
- Boi, Abbottabad
- Boi-1da
- Boii
- Boii (genus)
- Boise Airport
- Boy (disambiguation)
- Boí
- Bureau of Investigation
- Bôi River
- Canal do Boi
- Dat Boi
- Pakistan Board of Investment
- Paolo Boi
- Sant Boi (disambiguation)
- Sant Boi de Llobregat
- Sant Boi de Lluçanès
- Sk8er Boi
- Thailand Board of Investment
- The Bank of Industry (BOI)