| Acronym | Definition |
|---|
| PSU➣Power Supply Unit |
| PSU➣Plymouth State University (Plymouth, New Hampshire) |
| PSU➣Pennsylvania State University |
| PSU➣Portland State University (Portland, OR USA) |
| PSU➣Pittsburg State University (Pittsburg, Kansas) |
| PSU➣Phantasy Star Universe (video game) |
| PSU➣Playstation Universe (website) |
| PSU➣Power Supply Upgrade |
| PSU➣Prince of Songkla University (Thailand) |
| PSU➣Polysulfone |
| PSU➣Playstation Underground (game) |
| PSU➣Power Sellers Unite |
| PSU➣Public Sector Undertaking (India; state-owned enterprises) |
| PSU➣Portable Storage Unit |
| PSU➣Program Storage Unit |
| PSU➣Packet Switch Unit |
| PSU➣Prueba de Selección Universitaria (Spanish: University Selection Test; Chile) |
| PSU➣Program Support Unit (various locations) |
| PSU➣Primary Sampling Unit |
| PSU➣Production Start-Up |
| PSU➣Plaster Student Union (Missouri State University) |
| PSU➣Port Security Unit |
| PSU➣Practical Salinity Units |
| PSU➣Prince Sultan University (Riyadh, Saudi Arabia) |
| PSU➣Performance Share Units |
| PSU➣Philadelphia Student Union (Pennsylvania) |
| PSU➣Payment Service User |
| PSU➣Passenger Service Unit |
| PSU➣Police Support Unit (UK police) |
| PSU➣Pacific States University (Los Angeles, California) |
| PSU➣Parti Socialiste Unifié (France) |
| PSU➣Please Shut Up |
| PSU➣Palawan State University (Philippines) |
| PSU➣Prescribing Support Unit (UK) |
| PSU➣Patch Set Update (Oracle) |
| PSU➣Pangasinan State University (Philippines) |
| PSU➣Public Service Unit |
| PSU➣Pembroke State University (Lumberton, NC) |
| PSU➣Power Switching Unit |
| PSU➣Puntland State University (Somalia) |
| PSU➣Processor Speed Up |
| PSU➣Packet Switching Unit |
| PSU➣Primary Support Unit |
| PSU➣Primary Subordinate Unit |
| PSU➣Plastic Surgery Company, Inc. (stock symbol; formerly the symbol for South Puerto Rico Sugar Company) |
| PSU➣Peak Simultaneous Users |
| PSU➣Professional Standard Unit |
| PSU➣Postgonococcal Urethritis |
| PSU➣Punjab State University (India) |
| PSU➣Pressure Status Unit |
| PSU➣Pulse Shaping Unit |
| PSU➣Pressure Switch Unit |
| PSU➣Philippine Science University |
| PSU➣Plasma Spray Unit |
| PSU➣Photo-Synthetic Unit |
| PSU➣Pediatric Surgical Unit |