| Acronym | Meaning |
| BO | Tibetan Language (ISO 639-1 Code) |
| FIE | Fly-In Echelon |
| IR | Iridium |
| CRC | Central RTI Component - Chemical Rubber Company - Christian Reformed Church - Control And Reporting Centre -Costa Rican Col›n (ISO 4217 Currency Code) -Cyclic Redundancy Check |
| NGA | National Geospatial-Intelligence Agency -Nigeria (ISO 3166 Trigram) |
| LLLTV | Low-Light Level Television |
| OBSS | Off Board Sensor Systems - Ordo Byantinus Sancti Sepulchri (Byzantine Order Of The Holy Sepulchre) - Orbiter Boom Sensor System (space Shuttle) - Origins Billion Star Survey |
| YC | Yoctocoulomb |
| GTM | Guatemala (ISO 3166 Trigram) |
| BEN | Benin (ISO 3166 Trigram) |