| SEP | Association of Polish Electrical Engineers 
| Others |
| SEP | Clark Field Airport
| Others |
| SEP | Printer separator page
| Others |
| SEP | Safety and Environment Protection System
| Others |
| SEP | Salmonid Enhancement Program
| Others |
| SEP | Santa Elena Peninsula
| Others |
| SEP | Saturday Enrichment Program
| Others |
| SEP | Saturday Enrichment Programs
| Others |
| SEP | SBOL Enhancement Proposal
| Others |
| SEP | Scalable Encryption Processor
| Others |
| SEP | School Educational Plan
| Others |
| SEP | Science and Environmental Policy
| Others |
| SEP | Science Enrichment Preparation
| Others |
| SEP | Science Enrichment Program
| Others |
| SEP | Science Environmental Policy
| Others |
| SEP | Science Evaluation Panel
| Others |
| SEP | Science Exchange Program
| Others |
| SEP | Science Exchange Programme
| Others |
| SEP | Scientific Exchange Programme
| Others |
| SEP | Sclerosing Encapsulating Peritonitis
| Others |
| SEP | Scottish Equity Partners
| Others |
| SEP | Screamin Eagle Performance
| Others |
| SEP | Search Engine Poisoning
| Others |
| SEP | Search Engine Positioning
| Others |
| SEP | Search Engine Promotion
| Others |
| SEP | Sector Expenditure Program
| Others |
| SEP | Secure Entry Point
| Others |
| SEP | Secure Exchange Protocol
| Others |
| SEP | Secure Execute Processor
| Others |
| SEP | Self Employed Pension
| Others |
| SEP | Self-Employed Professional
| Others |
| SEP | Self-Evaluation Process
| Others |
| SEP | Selsius Ethernet Phone
| Others |
| SEP | Separate
| Others |
| SEP | Separated
| Others |
| SEP | Separation
| Others |
| SEP | Separator
| Others |
| SEP | Separator Page
| Others |
| Sep | September
| Others |
| SEP | Service Execution Platform
| Others |
| SEP | Service Extremely Professional
| Others |
| SEP | Signal Entrance Panel
| Others |
| SEP | Signal Entry Panel
| Others |
| SEP | Signaling End Point
| Others |
| SEP | Simple And Easy Programming
| Others |
| SEP | Simplified Employee Pension
| Others |
| SEP | Simplified Employee Plan
| Others |
| SEP | Simplified Employer Pension
| Others |
| SEP | Simulcast Edge Processor
| Others |
| SEP | Single Edge Processor
| Others |
| SEP | Single Entry Point
| Others |
| SEP | Single Exit Price
| Others |
| SEP | Site Engagement Program
| Others |
| SEP | Slashdot Effect Protection
| Others |
| SEP | Small Experimental Project
| Others |
| SEP | Smallpox Eradication Program
| Others |
| SEP | Smart Energy Profile
| Others |
| SEP | Social Equality Party
| Others |
| SEP | Socialist Equality Party
| Others |
| SEP | Society for Exact Philosophy
| Others |
| SEP | Software Engineering Process
| Others |
| SEP | Software Engineering Professionals
| Others |
| SEP | Solar Electric Propulsion
| Others |
| SEP | Solar Energetic Particle
| Others |
| SEP | Solar Energetic Particles
| Others |
| SEP | Soldier Enhancement Program
| Others |
| SEP | Solve Educate And Prevent
| Others |
| SEP | Solve, Educate, And Prevent
| Others |
| SEP | Somatosensory Evoked Potential
| Others |
| SEP | SomatoSensory Evoked Potentials
| Others |
| SEP | Some Evil Powers
| Others |
| SEP | Somebody Else Problem
| Others |
| SEP | Somebody Else's Problem
| Others |
| SEP | Someone Else's Problem
| Others |
| SEP | Source Evaluation Panel
| Others |
| SEP | South East Panteras
| Others |
| SEP | South End Press
| Others |
| SEP | Sozialistiche EinheitsPartei
| Others |
| SEP | Spanning Explorer Packet
| Others |
| SEP | Special Effects Performance
| Others |
| SEP | Special Embassy Program
| Others |
| SEP | Special Emphasis Panel
| Others |
| SEP | Special Emphasis Program
| Others |
| SEP | Special Enrollment Periods
| Others |
| SEP | Special Executive Protection
| Others |
| SEP | Special Police Unit
| Others |
| SEP | Spectra Energy Partners
| Others |
| SEP | Spherical Error Probability
| Others |
| SEP | Spherical Error Probable
| Others |
| SEP | Sports Entertainment Package
| Others |
| SEP | Stakeholder Enterprise Portal
| Others |
| SEP | Standard Essential Patent
| Others |
| SEP | Standards Of Effective Practice
| Others |
| SEP | Stanford Encyclopedia of Philosophy
| Others |
| SEP | Stanford Exploration Project
| Others |
| SEP | Startup Europe Partnership
| Others |
| SEP | State Energy Program
| Others |
| SEP | Strategic Enforcement Plan
| Others |
| SEP | Strategic Excellence Position
| Others |
| SEP | Strong Error Percentage
| Others |
| SEP | Student Education Plan
| Others |
| SEP | Student Education Profile
| Others |
| SEP | Student Educational Plan
| Others |
| SEP | Student Educational Planner
| Others |
| SEP | Student Educational Planning
| Others |
| SEP | Student Exchange Program
| Others |
| SEP | Summer Enrichment Program
| Others |
| SEP | Summer Entrepreneurship Program
| Others |
| SEP | SunPy Enhancement Proposal
| Others |
| SEP | Superior Energy Performance
| Others |
| SEP | Supplemental Environmental Project
| Others |
| SEP | Supplemental Environmental Projects
| Others |
| SEP | Supplementary Education Program
| Others |
| SEP | Support Electronics Package
| Others |
| SEP | Support Equipment Package
| Others |
| SEP | Surface Extension Project
| Others |
| SEP | Surrogate Employer Programme
| Others |
| SEP | Suzuki Eco Performance
| Others |
| SEP | Swingline Electric Punch
| Others |
| SEP | Symantec Endpoint Protection
| Others |
| SEP | Symantec Enterprise Protection
| Others |
| SEP | Synthetic Environment Program
| Others |
| SEP | System Enhancement Package
| Others |
| SEP | System Enhancement Program
| Others |
| SEP | System Evaluation Plan
| Others |
| SEP | Systems Engineering Plan
| Others |
| SEP | Systems Engineering Process
| Others |