Rank | Abbreviation | Meaning |
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***** | OISA | Organisation of the Islamic Shipowners Association
| |
**** | OISA | Office of International Student Affairs
| |
**** | OISA | Office of International Scientific Affairs
| |
*** | OISA | Ottawa Ismaili Students Association
| |
*** | OISA | Organization of Islamic Shipowners Association
| |
*** | OISA | Ohio Independent Screenplay Awards
| |
*** | OISA | Office of International Security Affairs
| |
** | OISA | of International Student Affairs
| |
** | OISA | of islamic shipowners association
| |
** | OISA | Ocean Internet Services Alton
| |
** | OISA | Office of International Science Activities
| |
* | OISA | Office of International Student Advisors
| |
* | OISA | Oregon Interscholastic Snowboard Association
| |