| USMC | United States Marine Corps |
| USS | United States Ship |
| USAF | United States Air Force |
| US | United States [of America] |
| FGOTUS | First Gentleman of the United States |
| USP | United States Pharmacopeia |
| USA | United States of America Vereinigte Staaten von Amerika |
| USA | United States Army US-Armee, http://www.army.mil |
| USM | United States Mail |
| POTUS | President Of The United States |
| USGS | United States Geological Survey |
| AUS | Army of the United States [engl.] |
| USNO | United States Naval Observatory Washington, DC, http://www.usno.navy.mil/ |
| USMP | United States Microgravity Payload |
| USGA | United States Golf Association |
| USFL | United States Football League |
| USCG | United States Coast Guard |
| USAC | United States Answer Center |
| USCA | United States Code, Annotated |
| USD | United States [of America] Dollar [s] |
| USDA | United States Department of Agriculture |
| AFUS | Air Force of the United States [engl.] Amerikanische Luftwaffe |
| USIA | United States Information Agency |
| USAC | United States Auto Club |
| U.S. Dep. Agric. Bull. | United States Department of Agriculture Bulletin Zeitschrift |
| ECOM | United States Army Electronics Command |
| Contrib. U. S. Natl. Herb. | Contributions from the United States National Herbarium Zeitschrift |
| USEPA | United States Environmental Protection Agency |
| U.S. Dep. Agric. Misc. Publ. | United States Department of Agriculture Miscellaneous Publication Zeitschrift |
| USN | Kriegsmarine der Vereinigten Staaten von Amerika [United States Navy] http://www.navy.mil |
| Proc. Natl. Acad. Sci. U.S.A. | Proceedings of the National Academy of Science of the United States of America Zeitschrift |
| PC | Peace Corps |
| CD | Corps Diplomatique [frz.] |
| CCC | Civil[ian] Conservation Corps |
| ANC | Army Nurse Corps |
| CGFR | Corps de Gardes Frontières suisse [frz.] Grenzschutztruppe der Schweiz |
| K9 | canine [K9 corps-army dogs] Hundestaffel |
| ROTC | Reserve Officers' Training Corps |
| SDM | Stammdienststelle der Marine |
| TSM | Technische Schule der Marine |
| MSC | Marine Stewardship Council |
| FSMT | Fachschule der Marine für Technik |
| MAF | Marine Abkürzungs Fimmel |
| MIP | Marine Insurance Policy [engl.] |
| AGMQZ | Nationale Arbeitsgruppe Marine Umweltqualitätsziele |
| NMEA | National Marine Electronics Association |
| MEPS | Marine Environment Protection Committee |
| M.I.P. | Marine Insurance Policy [engl.] Seeversicherungspolice |
| AIMS | Australian Institute of Marine Sciences [engl.] Australisches Meeresforschungsinstitut |
| A4 | Generalstabsoffizier[stelle] bei Luftwaffe und Marine für Logistik |