| Acronym | Definition |
|---|
| SU➣Belarus (ISO Country Identifier) |
| SU➣Start Up (various organizations) |
| SU➣Stanford University (Stanford, CA) |
| SU➣Sudan |
| SU➣Steven Universe (series) |
| SU➣Soviet Union |
| SU➣Supervisory (duties) |
| SU➣Sukhoi |
| SU➣Aeroflot (airline code) |
| SU➣Syracuse University (Syracuse, NY) |
| SU➣Single Unit (truck) |
| SU➣Sudbury (Ontario city) |
| SU➣Swipe Up (Snapchat) |
| SU➣Students' Union |
| SU➣Software Update |
| SU➣Slide Up |
| SU➣Student Union |
| SU➣Superuser |
| SU➣Storage Unit |
| SU➣Stockholm University (Sweden) |
| SU➣Sources and Uses |
| SU➣Single User |
| SU➣Screw You |
| SU➣Southern University |
| SU➣Shut Up |
| SU➣SketchUp (Google application) |
| SU➣Sonic Unleashed (video game) |
| SU➣Seattle University |
| SU➣Sydney University (Sydney, Australia) |
| SU➣Stetson University |
| SU➣Service Unit |
| SU➣Siliman University (Philippines) |
| SU➣Sub Unit (USMC) |
| SU➣Stumble Upon (website) |
| SU➣Straight Up |
| SU➣Summer Universiade (sporting event) |
| SU➣Surface Unit |
| SU➣Sunnuntai (Finnish: Sunday) |
| SU➣Silpakorn University (Bangkok, Thailand) |
| SU➣Salisbury University |
| SU➣Sabanci University (Istanbul, Turkey) |
| SU➣Stroke Unit (medicine) |
| SU➣Standard Unit |
| SU➣Southwestern University (Georgetown, Texas) |
| SU➣Scripture Union |
| SU➣Space Unit |
| SU➣Switch User (Linux) |
| SU➣Sofia University (Sofia, Bulgaria) |
| SU➣Sahlgrenska Universitetssjukhuset (Gothenburg, Sweden hospital) |
| SU➣Shenandoah University (Winchester, VA, USA) |
| SU➣Susquehanna University (Selinsgrove, PA) |
| SU➣Shippensburg University |
| SU➣Superb Used (philately) |
| SU➣Strayer University |
| SU➣Sensor Unit |
| SU➣Samford University (Birmingham, AL, USA) |
| SU➣Shepherd University (Shepherdstown, WV) |
| SU➣Shiraz University |
| SU➣Statens Uddannelsesstøtte (state education grant and loan scheme in Denmark) |
| SU➣Signal Unit (CCS #7 ITU-T) |
| SU➣Sullivan University (Lexington, Kentucky) |
| SU➣Sims Unleashed (game) |
| SU➣Skinners Union |
| SU➣Switching Unit |
| SU➣Subscriber Unit |
| SU➣Siehe Unten (German: see below) |
| SU➣Search Unit (US DoD) |
| SU➣Signaling Unit |
| SU➣Springfield University (The Simpsons) |
| SU➣Schreiner University (Kerrville, Texas) |
| SU➣Sub Urban Area (terrain type) |
| SU➣Situational Understanding (US Army) |
| SU➣South Underground |
| SU➣Spousal Unit |
| SU➣Sonic Underground (TV show) |
| SU➣Special Unitary (mathematics; group theory) |
| SU➣Scoville Unit (heat level of chili peppers) |
| SU➣Service Uniform (US Navy) |
| SU➣Sihala Urumaya (political party, Sri Lanka) |
| SU➣Shareholders United (campaigning to keep Manchester United independent) |
| SU➣Supply-Use (tables) |
| SU➣Canceled-To-Order (special philatelic cancel; hobby usage) |
| SU➣Selectable Unit (IBM) |
| SU➣Stabsunteroffizier |
| SU➣Stockist Undertaking (UK) |
| SU➣Samakhodnaya Ustanovka (Soviet self-propelled gun) |
| SU➣Svar Udbedes (Danish: Reply Requested, on invitations) |
| SU➣Siegburg/Rhein-Sieg-Kreis (German license plate) |
| SU➣Stat Unit |
| SU➣Sukhoi, Pavel Osipovich (aircraft designer) |
| SU➣Subresolution Attenuated |
| SU➣Safe, Undetected Failure |
| SU➣Sindh University Jamshoro (Pakistan) |
| SU➣Sulphonyl Urea (herbicide) |
| SU➣Spitali Ushtarak (Albanian: Military Hospital) |
| SU➣Society of the Sisters of St. Ursula (religious order) |
| SU➣Submarine Unqualified |
| SU➣Surd'Universo ( Portugal) |