| JISA | IEEE Reynold B. Johnson Information Storage Award 
| Others |
| JISA | Jach a Inti Sociedad Anonima
| Others |
| JISA | Jamaica Independent Schools Association
| Others |
| JISA | Jamaica Independent Schools' Association
| Others |
| JISA | Japanese International Students Association
| Others |
| JISA | Japanese International Students' Association
| Others |
| JISA | Jiloca Industrial S A
| Others |
| JISA | Journal of Information Security and Applications
| Others |
| JISA | Journal of Internet Services and Applications
| Others |
| JISA | Junior Individual Savings Account
| Others |
| JISA | Junior Individual Savings Accounts
| Others |