Gai
- Antonio Gai
- Deng Gai
- G. S. Gai
- GA1 (disambiguation)
- GAE (disambiguation)
- GAI (Arabidopsis thaliana gene)
- GAI (musician)
- GAIE
- Gai Assulin
- Gai Brodtmann
- Gai Eaton
- Gai Toms
- Gai Waterhouse
- Gai's Bakery
- Gai, Armenia
- Gai, Russia
- Gai, Styria
- Gaia Gai
- Gais (disambiguation)
- Gal (disambiguation)
- Gallium monoiodide
- Gatluak Gai
- Gay (disambiguation)
- Gay American Indians
- General Ability Index
- Generative artificial intelligence
- Government Accountability Institute
- Guaranteed annual income
- Guided affective imagery
- Kamen Rider Gai
- Main Directorate for Traffic Safety
- Maito Gai
- Montgomery County Airpark
- Oleksiy Gai
- Pa Amadou Gai
- Pa Mamadou Gai
- Pratibha Gai
- Silvio Gai
- Solomon Gai
- Taban Deng Gai