| Acronym | Meaning |
 | IY | Iraqi-Saudi Neutral Zone (FIPS 10-4 Territory Code; Obsolete 1993) |
| 4WD | Four Wheel Drive (cf. AWD) |
| WHO | World Health Organisation |
| ACS | Affiliated Computer Services (NYSE ACS) - American Cancer Society - American Chemical Society - Association Of Caribbean States |
| IJWP | Interim Joint Warfare Publication |
| LIFO | Last In |
| IPR | In Progress Review - Intellectual Property Rights - Intelligence Production Requirement |
| AOR | Area Of Responsibility |
| DSWA | (U.S.) Defense Special Weapons Agency |
| YUG | Former Yugoslavia (ISO 3166 Trigram |
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