| Acronym | Meaning |
| IOT | British Indian Ocean Territory (ISO 3166 Trigram) |
| AA | Attoampere |
| YPA | Yards Per Pass Attempt (football Statistic) |
| FOR | Field Of Regard - Frame Of Reference |
| OO | Object Oriented - Over & Out |
| BRB | Barbados (ISO 3166 Trigram) -Be Right Back (Internet Chat Abbreviation) |
| NPG | Needline/Network Participation Group |
| BLR | Belarus (ISO 3166 Trigram) |
| HSC | High School Certificate (as Used In New South Wales) |
| USAARMC | U.S. Army ARMor Center |