| Acronym | Definition |
|---|
| SE | Special Edition |
| SE | Southeast |
| SE | Second Edition |
| SE | Self Employed |
| SE | Side Effects |
| SE | Software Engineering |
| SE | System(s) Engineering |
| SE | Search Engine |
| SE | Special Education |
| SE | Sex Education |
| SE | Stock Exchange |
| SE | Sony Ericsson |
| SE | Special Effects |
| SE | Sweden (Internet top-level domain) |
| SE | Southern Europe |
| SE | Soul Eater (anime) |
| SE | Sound Effect |
| SE | Standard Edition |
| SE | Saint Etienne (musical group) |
| SE | Santiago del Estero (Argentina province) |
| SE | Sales Executive |
| SE | Sentence (Hyper Logo command) |
| SE | Society and Environment (school subject) |
| SE | Seychelles (Admiralty, Aldabra & Assumption) |
| SE | Standard Error (statistics) |
| SE | Structural Engineer |
| SE | Special Equipment |
| SE | Straight Edge (philately) |
| SE | Support Equipment |
| SE | Stretching Exercises |
| SE | London Southeast (UK postcode) |
| SE | Sales Engineer |
| SE | Systems Engineer |
| SE | Silver Edition (model) |
| SE | Social Engineering (computers) |
| SE | Special Envoy |
| SE | State Engineering (Pakistan government) |
| SE | Single Engine |
| SE | Son Excellence (French: His Excellency) |
| SE | Single Event (radiation effect) |
| SE | square error |
| SE | Supported Employment |
| SE | Solvent Extraction |
| SE | Solid Edge (3D solid modeling CAD software) |
| SE | System Expansion (Apple Macintosh) |
| SE | Single End |
| SE | Specialized Experience |
| SE | Sergipe (Brazil) |
| SE | Spring Equinox |
| SE | Sport England (UK) |
| SE | Système d'Exploitation (French: Operating System) |
| SE | Sony Electronics |
| SE | Sports Edition |
| SE | Selenium |
| SE | Square End |
| SE | Snake Eater (gaming) |
| SE | Status Epilepticus |
| SE | Spaceship Earth (EPCOT) |
| SE | Spin-Echo |
| SE | Split End (similar to wide receiver; football) |
| SE | Su Excelencia (title of address) |
| SE | Stimulated Emission |
| SE | Standard Examiner (newspaper) |
| SE | Snowy Egret (bird) |
| SE | Systems Europe (Belgium) |
| SE | System Environment |
| SE | Spongiform Encephalopathy |
| SE | Seven Eleven (convenience market chain) |
| SE | Screaming Eagles (soccer club; Washington, DC) |
| SE | Spectral Efficiency |
| SE | Self Evident |
| SE | Shift Engineer |
| SE | Sarjana Ekonomi (Indonesian: Bachelor of Economics) |
| SE | Space Elevator |
| SE | Student Expectations |
| SE | Somatic Experiencing (mental health) |
| SE | Standard English |
| SE | Spectroscopic Ellipsometry |
| SE | Societas Europaea (European public limited-liability company) |
| SE | Siege Engine (gaming) |
| SE | Storage Element |
| SE | Substantial Equivalence |
| SE | Senior Engineer |
| SE | Spurious Emission |
| SE | Space Empires (gaming) |
| SE | Spectrum Engineering |
| SE | Sand Equivalent (civil engineering) |
| SE | Supplies & Equipment |
| SE | Stable Element |
| SE | Server Environment |
| SE | Student Experiment (NASA) |
| SE | System Evaluation |
| SE | Status Entry (Hekimian) |
| SE | Serrated Edge |
| SE | Stroboscopic Effect |
| SE | Starr-Edwards (heart valves) |
| SE | Service Économique (French: Economic Service; French Embassy) |
| SE | Superelevation |
| SE | Safety Evaluation |
| SE | Standards Executive |
| SE | Safety Engineer |
| SE | Sharky Extreme |
| SE | Spreading Efficiency (amount of information bits conveyed by each chip) |
| SE | Service Evaluation (AT&T) |
| SE | Survival Equipment |
| SE | Selling Expenses |
| SE | Static Encephalopathy (alcohol exposed) |
| SE | Systematic Error |
| SE | Spezial Electronic (German electronic company) |
| SE | Software Evolvability (IEEE International Workshop) |
| SE | Support Element |
| SE | Service Establishment (Sprint) |
| SE | Secondary Electron |
| SE | Saban Entertainment |
| SE | System Extension |
| SE | Superintending Engineer |
| SE | Slovenské Elektrárne (Slovak: Slovak Power Plants; est. 2002; Slovakia) |
| SE | System Effectiveness |
| SE | Security Escort |
| SE | Strategic Ecosystem |
| SE | Singles Encounter |
| SE | Supported Education |
| SE | Synthetic Environment |
| SE | Segment End (Bellcore) |
| SE | Surrogate Endpoint |
| SE | Switching Element |
| SE | Subcritical Experiment |
| SE | Scientific Editing |
| SE | Self-Emulsifying |
| SE | Stratic Energy Corporation (Calgary, Canada; stock symbol) |
| SE | September Eleventh |
| SE | Situs Est (Latin: It Is Located; epigraphy) |
| SE | Salem Elementary |
| SE | Syntax Element (video coding) |
| SE | Supporting Establishment |
| SE | Swine Erysipelas |
| SE | Serial Enable |
| SE | Sucrose Equivalence (food measurement) |
| SE | Surveillant d'Externat (French: Supervisor of Clerkship) |
| SE | Square Enix, Ltd |
| SE | surface de l'exploitation |
| SE | Screwed Ends |
| SE | Supplier Exchange |
| SE | Suspo-Emulsion |
| SE | Seismic Earthquake |
| SE | Secretor Factor |
| SE | Survivability Enhancement |
| SE | Sprint Express |
| SE | Salmonella Enteritides |
| SE | Shadow Elves (gaming) |
| SE | Saami, Northern (Norwegian ISO Language Code) |
| SE | Single-Ended, Cyclindrical Boiler (US Navy) |
| SE | Sheets & Equipment (NYC Transit Authority) |
| SE | Societas Eruditorum (Latin: People at the Place of Learning) |
| SE | Systems Engineering and Integration Office (NIMA) |
| SE | Signal Excess |
| SE | Synchronous Editing |
| SE | Small Eagles (Egypt) |
| SE | Synchronization Element |
| SE | Supportable Evaluation |
| SE | Statiese Enkefalopatie |