| Acronym | Definitions |
|---|---|
| ISU | 11 |
| ISUP | 3 |
| ISV | 7 |
| ISVMA | 1 |
| ISVS | 4 |
| ISW | 5 |
| ISWG | 4 |
| ISWMP | 1 |
| ISX | 3 |
| ISY | 2 |
| ISYSCON | 2 |
| IT | 44 |
| IT&AP | 2 |
| IT&D | 1 |
| IT&E | 2 |
| IT/SP | 1 |
| IT21 | 1 |
| ITA | 21 |
| ITAA | 2 |
| ITAAS | 2 |
| ITAC | 4 |
| ITACA | 1 |
| ITACCS | 1 |
| ITACS | 2 |
| Ital | 3 |
| ITALZ | 1 |
| ITAM | 2 |
| ITAMP | 2 |
| ITAR | 1 |
| ITAS | 4 |
(1411 — 1440 of 1630)