| Acronym | Definition |
|---|
| Str | Street |
| STR | String (programming languages) |
| STR | Short Tandem Repeat |
| STR | Straight |
| STR | Strength |
| STR | Strip |
| STR | Straße (German: Street) |
| STR | Structures |
| STR | Smith Travel Research |
| STR | Strand |
| StR | Stadtrat (Austria, Europe) |
| STR | Santa Rosa (Guatemala territorial division) |
| STR | Suspend to RAM |
| STR | Straat (Dutch: street) |
| STR | Stand to Reason (Signal Hill, CA) |
| STR | Scuderia Toro Rosso (Italian auto racing team) |
| STR | Steps to Reproduce (a behavior) |
| STR | Special Theory of Relativity |
| StR | Studienrat (Austria, Europe) |
| STR | Suspicious Transaction Report |
| STR | Stromelysin |
| STR | Sustained Transfer Rate |
| STR | Stuttgart, Germany - Echterdingen (Airport Code) |
| STR | Society of Thoracic Radiology |
| STR | Store Task Register |
| STR | Software Test Report |
| STR | Software Technology Review (Carnegie Mellon) |
| STR | Software Trouble Report |
| STR | Sindicato de Trabalhadores Rurais (Portuguese: Union of Rural Workers; Brazil) |
| STR | Synchronous Transmitter Receiver |
| STR | Square to Round (mechanical) |
| STR | Symbol Timing Recovery |
| STR | Subcontract Technical Representative |
| STR | Structural Requirement |
| STR | Synchronous Transmit Receive |
| STR | System Technical Report |
| STR | Service Terminal Rotterdam |
| STR | Subject to Regularization (Visa to Nigeria) |
| STR | Specialised Technology Resources (UK) Ltd. |
| STR | Submarine Thermal Reactor |
| STR | Sequential Transfer Rate |
| STR | Soft-Tissue Rheumatism (medical disorder) |
| STR | Short-Term Recall (neuropsychology) |
| STR | Southwest Times Record (newspaper) |
| STR | Spot The Reference |
| STR | Shawnee Terminal Railway Company |
| STR | Stall Torque Ratio (torque converter) |
| STR | Sold To Rent |
| STR | Science Tape Recorder |
| STR | State- and Time-Dependent Routing |
| STR | Smile, Talk, Raise both arms (method to determine if a person has suffered a stroke) |
| STR | System Test Review |
| STR | Spurious Trip Rate |
| STR | Scanning Television Radiometer |
| STR | Société Tunisienne de Radiologie |
| STR | Software Test Result |
| STR | System Trouble Report |
| STR | Selective Trunk Reservation |
| STR | Starboard Thermal Radiator |
| STR | Servant Team Retreat |
| STR | Symmetric, Transitive, and Reflexive (COM identity rule) |
| STR | Systems Technology Radar |
| STR | Swimming Technology Research, Inc. |
| STR | Specialized Tone Receiver (Sprint) |
| STR | Subject Terminal Control Release |
| STR | Short-Term Random Variance |
| STR | Suspect Transaction Report |
| STR | Speaker Trained Recognition (speech recognition systems) |
| STR | Standard Training Requirement |
| STR | Student Training Requirement |
| STR | Steel Tank Rectifier |
| STR | Survey Team Report |
| STR | Supplementary Technical Requirement |
| STR | System Timing References |
| STR | Systems and Technology Research, Inc (Fairfax, Virginia) |
| STR | Synchronous Track & Receive |
| STR | Storage Retrieval Truck (Automated Warehouse) |
| STR | Service Transaction Record |
| STR | Questar Corporation (Stock Symbol) |
| STR | Self-Tuning Regulator |
| STR | Sales to Retailers (Beer Industry) |
| STR | Student-Teacher Ratio (education measurement) |
| STR | Sell To Rent |
| STR | Support, Time and Recovery Worker (formerly Community Support Worker) |
| STR | Sell Through Rate |
| STR | State Teachers Retirement (various locations) |
| STR | Student Teacher Relationship (education) |