STP
- 2,5-Dimethoxy-4-methylamphetamine
- 25 metre standard pistol
- German Union of Saddlers, Upholsterers and Portfolio Makers
- ISO 10303-21
- Julia Cafritz
- Modernising Scientific Careers
- Robbin' the Hood
- STP (motor oil company)
- Sacrae Theologiae Professor
- Seattle to Portland Bicycle Classic
- Segmenting-targeting-positioning
- Serial ATA Tunneling Protocol
- Server Time Protocol
- Sewage Treatment Plant
- Shielded twisted pair
- Shovel test pit
- Signal Transfer Point
- Silane-terminated polymers
- Slaughter to Prevail
- Society for Threatened Peoples
- Sodium triphosphate
- Software Technology Parks of India
- Solar Terrestrial Probes program
- South Texas Nuclear Generating Station
- Soviet-type economic planning
- Space Test Program
- Spanning Tree Protocol
- St Pancras railway station
- St. Paul Downtown Airport
- Stand-to-pee device
- Standard temperature and pressure
- Sticky toffee pudding
- Stone Temple Pilots
- Straight-through processing
- Suntech Power
- Sustainability and transformation plan
- São Tomé and Príncipe