| SEC | Diskreet SECure Encrypted file 
| Others |
| SEC | Disney Animation Studio Secured animation file
| Others |
| SEC | Gas Sampling method
| Others |
| SEC | Pretty Good Privacy SECret key ring file
| Others |
| SEC | S-Klasse Einspritzmotor Coupe
| Others |
| SEC | Saab Enthusiasts Club
| Others |
| SEC | Sales Executive Club
| Others |
| SEC | Samsung Electronics Corporation
| Others |
| SEC | Sarkeys Energy Center
| Others |
| SEC | Saturn Eclipse And Civic
| Others |
| SEC | Save The Earth Campaign
| Others |
| SEC | Sbus Ethernet Controller
| Others |
| SEC | Scalable Enterprise Computing
| Others |
| SEC | School Encouraged Corruption
| Others |
| SEC | Science and Energy Commission
| Others |
| SEC | Scottish Episcopal Church
| Others |
| SEC | Sculpture Element Collection
| Others |
| SEC | Search Engine College
| Others |
| SEC | Search Engine Compliance
| Others |
| SEC | Secant
| Others |
| sec | Second(s)
| Others |
| SEC | SECondary
| Others |
| SEC | Secondary Average
| Others |
| SEC | Secretary
| Others |
| SEC | Secured Animation File
| Others |
| SEC | Securing Entitlements For Crooks
| Others |
| SEC | Securities and Exchange Comission
| Others |
| SEC | Securities and Exchange Commisison
| Others |
| SEC | Securities and Exchange Commission
| Others |
| SEC | Securities and Exchange Commission (United States)
| Stocks and Trading, Organization |
| SEC | Securities Exchange Commission
| Others |
| SEC | Security
| Slang, Security |
| SEC | Security and Exchange Commission
| Others |
| SEC | Security Control System
| Others |
| SEC | Security Evaluation Criteria
| Others |
| SEC | See, Everyone Cheats
| Others |
| SEC | Seiko Epson Corporation
| Others |
| SEC | Selfie Elevator Conference
| Others |
| SEC | Send Extra Cash
| Others |
| SEC | Send Extra Cocktails
| Others |
| SEC | Sephardic Educational Center
| Others |
| SEC | Sequence End Code
| Others |
| SEC | Sequential Events Controller
| Others |
| SEC | Series Elastic Component
| Others |
| SEC | Service Entrance Cable
| Others |
| SEC | Set Carry
| Others |
| SEC | Sharjah Engineering Consultants
| Others |
| SEC | ShinRa ElectricPower Company
| Others |
| SEC | Sigma Epsilon Chapter
| Others |
| SEC | Simple Event Correlator
| Others |
| SEC | Single Edge Cartridge
| Others |
| SEC | Single Edge Cartridges
| Others |
| SEC | Single Edge Connector
| Others |
| SEC | Single Edge Contact
| Others |
| SEC | Singlebit Error Correction
| Others |
| SEC | Size Exclusion Chromatography
| Others |
| SEC | Skull-Eating Carnivore
| Others |
| SEC | Snell Engineering Consultants
| Others |
| SEC | So Everyone Cheats
| Others |
| SEC | So Extremely Common
| Others |
| SEC | Socio-Economic Classification
| Others |
| SEC | Soft Exposed Charlatans
| Others |
| SEC | Software Experience Center
| Others |
| SEC | Some Easy Conference
| Others |
| SEC | Sonderklasse Einspritzung Coupe
| Others |
| SEC | Sorry Excuse Of Crappola
| Others |
| SEC | Source Evaluation Committee
| Others |
| SEC | South Eastern Conference
| Others |
| SEC | South Equatorial Current
| Others |
| SEC | Southeastern Conference
| Others |
| SEC | Southern Economic Corridor
| Others |
| SEC | Southern Electric Contracting
| Others |
| SEC | Southern Episcopal Church
| Others |
| SEC | Southside Electric Cooperative
| Others |
| SEC | Southwestern Environmental Consultants
| Others |
| SEC | Space Environment Center
| Others |
| SEC | Space Environmental Center
| Others |
| SEC | Spanish Society of Cytology
| Others |
| SEC | Special Ed Conference
| Others |
| SEC | Special Education Center
| Others |
| SEC | Special Equipment Compensation
| Others |
| SEC | Special Exposure Cohort
| Others |
| SEC | Specific Energy Consumption
| Others |
| SEC | Specimen Exchange Chamber
| Others |
| SEC | Speed Eliminates Competition
| Others |
| SEC | Spoiler Elevator Computer
| Others |
| SEC | Sponsor Executive Committee
| Others |
| SEC | St Edwards College
| Others |
| SEC | Standard Entry Class
| Others |
| SEC | Starlet Enthusiasts Community
| Others |
| SEC | State Electricity Commission
| Others |
| SEC | State Enterprises Commission
| Others |
| SEC | Stationary Emissions Control
| Others |
| SEC | Stratos Enthusiasts Club
| Others |
| SEC | Student Engineers Council
| Others |
| SEC | Student Experience Committee
| Others |
| SEC | Submarine Element Coordinator
| Others |
| SEC | Superior Economic Compensation
| Others |
| SEC | Suppress Error Correction
| Others |
| SEC | Supreme Eiye Confraternity
| Others |
| SEC | Surely Everybody's Cheating
| Others |
| SEC | Surrrrrrrrrre Everyone Cheats
| Others |
| SEC | Surveys of Enacted Curriculum
| Others |
| SEC | Swiftly Enhanced Careers
| Others |
| SEC | Symposium on Edge Computing
| Others |
| SEC | Synergy Electronic Commerce
| Others |
| SEC | US Securities and Exchange Commission
| Others |