| Acronym | Meaning |
| COTS | Commercial Off The Shelf |
| CRAM | Combined Radiometric Correction Model |
| USCINCSPACE | United States Commander In Chief |
| WL | Wehrmacht Luftwaffe (German WW2 Air Force Vehicle Licence Plate Code) |
| USNOFS | U.S. Naval Observatory Flagstaff Station |
| PLGR | Precision Lightweight GPS Receiver (plugger) |
| IPK | Inupiaq Language (ISO 639-2 Code) |
| MAS | NATO Military Agency For Standardisation |
| FIFA | F?d?ration Internationale De Football Association (French International Association Football Federation) |
| IY | Iraqi-Saudi Neutral Zone (FIPS 10-4 Territory Code; Obsolete 1993) |