| CSAI | California Smog and Automotive Institute 
| Others |
| CSAI | Catalytic Sustainable Agribusiness Investment
| Others |
| CSAI | Catholic Scout Association in Israel
| Others |
| CSAI | Cellular Subscribers Association of India
| Others |
| CSAI | Center for Student Activities and Involvement
| Others |
| CSAI | Center for Student Activities Involvement
| Others |
| CSAI | Center For The Study Of Ancient Italy
| Others |
| CSAI | Center on Standards and Assessment Implementation
| Others |
| CSAI | Centre for Sustainable Aquaculture Innovations
| Others |
| CSAI | Centro Servizi Ambiente Impianti
| Others |
| CSAI | Chief Special Artificer (instruments)
| Others |
| CSAI | Children- Surgical Aid International
| Others |
| CSAI | Chimney Sweep Association of Ireland
| Others |
| CSAI | Chimney Sweeps Association of Ireland
| Others |
| CSAI | Commissione Sportiva Automobilistica Italiana
| Others |
| CSAI | Congregational Study Action Issue
| Others |
| CSAI | Corpus of South Arabian Inscriptions
| Others |
| CSAI | Creation Science Association of India
| Others |
| CSAI | Creative Systems Architecture, Inc.
| Others |
| CSAI | Culinary Solutions Australia International
| Others |
| CSAI | Cyber Security and Artificial Intelligence
| Others |
| CSAI | Cyber Security Authority of India
| Others |
| CSAI | Cybertronics Security Automation Integrators
| Others |