Uninterruptible Power Supply 
United Parcel Service 
Uninterrupted Power Supply 
Uninterruptible Power Supplies 
User Planning System 
Uninterruptible Power System 
Uninterruptible Power Systems 
Universal Polar Stereographic 
Uninterruptable Power Supply 
Upright Perigee Stage 
Uninterruptible Power Source 
ultraviolet photoelectron spectroscopy 
ultraviolet photoemission spectroscopy 
Unix Print Services 
Uninterrupted Power Source 
Uninterruptible Power Sources 
Un-Interruptible Power Supply 
Universal Planning Service 
Universal Power Supply 
University of Puget Sound 
UV photoelectron spectroscopy 
ubiquitin-proteasome system 
Uki Public School 
Ulan Public School 
Ulladulla Public School 
Ulmarra Public School 
Ulong Public School 
Ultimo Public School 
Ultraviolet Photoelectron Spectrometry 
Ultraviolet Photoelectron Spectrum