| Acronym | Definition |
|---|
| STP | S'il Te Plaît (French: Please, informal) |
| STP | Standard Temperature & Pressure |
| STP | Scientifically Treated Petroleum (oil treatment) |
| STP | Sewage Treatment Plant |
| STP | Straight Through Processing |
| STP | Spanning Tree Protocol |
| STP | Sao Tomé and Principe (island nation on the coast of Equatorial Guinea; ISO Country code) |
| STP | Stone Temple Pilots (band) |
| STP | Shielded Twisted Pair |
| STP | Surface Transportation Program |
| STP | South Texas Project (electric generating station) |
| STP | Signaling Transfer Point |
| STP | Signal Transfer Point |
| STP | Solar Terrestrial Physics |
| STP | Software Through Pictures |
| STP | Software Technology Park |
| STP | Space Test Program |
| STP | Solar Terrestrial Probes |
| STP | Save the Planet |
| STP | Science and Technology Policy |
| STP | Stoop (building code) |
| STP | Software Test Plan |
| STP | Supervisory Training Program |
| STP | Swords to Plowshares |
| STP | Sodium Tripolyphosphate |
| STP | Straight Through Process |
| STP | Segmentation, Targeting and Positioning |
| STP | Serial Ata Tunneling Protocol (SAS) |
| STP | Saint Paul Minnesota |
| STP | Site Treatment Plan |
| STP | Secrétariat Technique Permanent |
| STP | Satellite Ticket Printer |
| STP | System Test Plan |
| STP | Stephen Travis Pope |
| STP | Scheduled Transfer Protocol |
| STP | Science Training Programs |
| STP | Sticky Toffee Pudding (dessert) |
| STP | Satellite Transport Protocol |
| STP | Society of Toxicologic Pathologists |
| STP | Saint Petersburg, Florida |
| STP | Short-Term Program |
| STP | Short Term Project |
| STP | Show the Plan |
| STP | Serenity Tranquility Peace (designer drug) |
| STP | Simple Temporal Problem |
| STP | Standard Test Procedure |
| STP | Secure Transfer Protocol |
| STP | Shovel Test Pit (archaeology) |
| STP | Shock Trauma Platoon (US Marine Corps medical unit) |
| STP | Superintendência de Transporte Público (Brasil) |
| STP | Space Test Payload |
| STP | Service Transfer Point |
| STP | Secret Tweaker Pad (song) |
| STP | Selective Tape Print |
| STP | Scientific Technology Panel (Integrated Ocean Drilling Program) |
| STP | System Training Plan |
| STP | St Paul, MN, USA - Downtown Airport (Airport Code) |
| STP | Sosyalist Türkiye Partisi (Party for Socialist Turkey) |
| STP | Studebaker Packard Corporation |
| STP | System Test Procedure |
| STP | Software Test Procedures |
| STP | Soft Tail Pro (Trek Bicycle Corporation) |
| STP | Situation, Target, Proposal (used to identify a problem, the ideal state, and solution) |
| STP | Sales Tax Payable |
| STP | Same Time Post (message boards) |
| STP | Security Test Plan |
| STP | Soldiers Training Publication |
| STP | Systems Technology Program |
| STP | Speed Test Pro (software) |
| STP | Supplemental Transportation Program |
| STP | Stowarzyszenie Tlumaczy Polskich (Association of Polish Translators and Interpreters) |
| STP | Service Traffic Position |
| STP | Set of Transmission Parameters |
| STP | Sooner Than Possible |
| STP | Space Transit Planetarium |
| STP | security technical procedure (US DoD) |
| STP | Services Transaction Program (IBM) |
| STP | Service Test Point |
| STP | Stop Teenage Pregnancy |
| STP | State Touring Program (Florida) |
| STP | Show The Pride |
| STP | Standard Technical Paper |
| STP | Soggy Toilet Paper |
| STP | Sprint Transformation Project |
| STP | SGML Target Registry |
| STP | Standard Term Proposal |
| STP | Send Tell Please (online gaming) |
| STP | Section Termination Point (Alcatel) |
| STP | Servicewide Transition Policy |
| STP | Storage and Transfer Processor |
| STP | Sanctae Theolgiae Professor (Professor of Theology) |
| STP | Seattle to Portland 200-Mile Bicycle Ride |
| STP | Student Teacher Poet |
| STP | Speed, Temperature, Pressure |
| STP | Seasoning Training Program |
| STP | Scientific and Technical Packages (NATO) |
| STP | Specialized Training Package |
| STP | Sink Termination Point |
| STP | Spent Target Pool |
| STP | Speakers Training Program |
| STP | Station Terminal Processor (AN/FSC-78B SATCOM terminal) |
| STP | Sub-surface Test Pits |
| STP | Section Top Page |