English abbreviations from usni to usp
- USNI (United States Naval Institute)
- USNIMD (United States Naval Institute Military Database)
- USNIP (USNIP- United States Non-Interventional Programs)
- USNMF (United States Navy Memorial Foundation)
- USNMR (United States National Military Representative)
- USNMTG (United States North Atlantic Treaty Organization (NATO) Military Terminology Group)
- USNN (Universities and Schools Network Newsletter)
- USNO (U.S. Naval Observatory)
- USNOFS (United States Naval Observatory Flagstaff Station)
- USNORTHCOM (United States Northern Command)
- USNP (United States Newspaper Program)
- USNR (United States Navy Reserve)
- USNRF (United States Naval Reserve Forces)
- USNS (United States Naval Ship)
- USNSCC (United States Naval Sea Cadet Corps)
- USNT (United States Naval Tug)
- USNTA (United States National Tennis Academy)
- USNV (United States Naval Vessel)
- USNW (U.S. News & World Report Magazine)
- USNY (University of the State of New York (usually pronounced "use-knee"))
- USNZ (University Sport New Zealand)
- USO (Unverified Southern Object)
- USOC (User Support Operations Center)
- USOF (United States Orienteering Federation)
- USOP (Ultra-Small Outline Package)
- USP (Universal Self-loading Pistol)