| S&E | Science and Engineering 
| Others |
| S&E | Science and Engineering (MSFC Directorate)
| Others |
| S&E | Service and Equipment
| Others |
| S.E. | Southeast
| Others |
| S/E | Side Effect
| Others |
| SE | Ferrocarriles Unidos del Sureste
| Others |
| SE | Safe and Effective
| Others |
| SE | Saint Eustatsius
| Others |
| SE | Sales Engineer
| Others |
| SE | Sales Event
| Others |
| SE | Sales Expert
| Others |
| SE | Salland Engineering
| Others |
| SE | Salmonella Enteriditis
| Others |
| SE | Sanitary Engineering
| Others |
| SE | Sarah Elizabeth
| Others |
| SE | Scalar Enhanced
| Others |
| SE | Schloss Einstein
| Others |
| SE | Scientific and Engineering
| Others |
| SE | Scottish Executive
| Others |
| SE | Scouting Experimental
| Others |
| SE | Scrambled Eggs
| Others |
| SE | Search Engine
| Others |
| SE | Second Edition
| Others |
| SE | Second Epoch
| Others |
| SE | Security Enhanced
| Others |
| SE | Security Environment
| Others |
| SE | Select Edition
| Others |
| SE | Selenium
| Element |
| SE | Self Employed
| Others |
| SE | Self Employment
| Others |
| SE | Self Emulsifying
| Others |
| SE | Self Enforced
| Others |
| SE | Self Erecting
| Others |
| SE | Self Esteem
| Others |
| SE | Semi Evergreen
| Others |
| SE | Semo Port Railroad Incorporated
| Others |
| SE | Senior Earthdog
| Others |
| SE | Senior Engineer
| Others |
| SE | Sensory Epithelium
| Others |
| SE | Sergipe
| Others |
| SE | Serine Esterase
| Others |
| SE | serum
| Others |
| SE | Server Environment
| Others |
| SE | Service Engineer
| Others |
| SE | Service Entrance
| Others |
| SE | Seven Eigths
| Others |
| SE | Sex Education
| Others |
| SE | Sexual Exploration
| Others |
| SE | Sexually Experienced
| Others |
| SE | Sexy Edition
| Others |
| SE | Shane Endicott
| Others |
| SE | Sheep Erythrocyte
| Others |
| SE | Sheep Everywhere
| Others |
| SE | Shell Extension
| Others |
| SE | Shift Enhancing
| Others |
| SE | Shoddy Equipment
| Others |
| SE | Sides and Ends
| Others |
| SE | Signature Edition
| Others |
| SE | Silent Edition
| Others |
| SE | Simple and Easy
| Others |
| SE | Simple Edition
| Others |
| SE | Simple Electronics
| Others |
| SE | Simplicial Exact
| Others |
| SE | Simplified Edition
| Others |
| SE | Simplified Electronics
| Others |
| SE | Simply Excellent
| Others |
| SE | Simultaneous Engineering
| Others |
| SE | Single Ended
| Others |
| SE | Single Engine
| Others |
| SE | Single-Ended
| Others |
| SE | Singles Event
| Others |
| SE | Site Exploitation
| Others |
| SE | Sled Edition
| Others |
| SE | Sleep Efficiency
| Others |
| SE | Slightly Enhanced
| Others |
| SE | Sloth Edition
| Others |
| SE | Slow Edition
| Others |
| SE | Slower Edition
| Others |
| SE | Sniper Edition
| Others |
| SE | Social Engineering
| Others |
| SE | Social Exclusion
| Others |
| SE | Societas Europaea
| Others |
| SE | Society for Endocrinology
| Others |
| SE | socioeconomic
| Others |
| SE | Software Engineering
| Others |
| SE | Software Entwicklung (software development)
| Others |
| SE | Solar Empire
| Others |
| SE | Soldered Edition
| Others |
| SE | Solo Exons
| Others |
| SE | Solvent Extract
| Others |
| SE | Solvent Extraction
| Others |
| SE | Something Else
| Others |
| SE | Somewhat Erratic
| Others |
| SE | Sony Ericsson
| Others |
| SE | Sorry Excuse
| Others |
| SE | Soul Eater
| Others |
| SE | Soul Emergence
| Others |
| SE | South East
| Others |
| SE | South Eastern postcode area
| Others |
| SE | South-East
| Others |
| SE | Special Edition
| Others |
| SE | Special Education
| Others |
| SE | Special Effects
| Others |
| SE | Special Equipment
| Others |
| SE | Speech Enhancement
| Others |
| SE | Spend Extra
| Others |
| SE | Sperm Extract
| Others |
| SE | Spherical Error
| Others |
| SE | Spicy Entertainment
| Others |
| SE | Spin Echo
| Others |
| SE | Spirit Energy
| Others |
| SE | Spiritual Expressions
| Others |
| SE | Splinter Edition
| Others |
| SE | Split End
| Others |
| SE | Spongiform Encephalopathy
| Others |
| SE | Sport Edition
| Others |
| SE | Sport Enhancement
| Others |
| SE | Sports Edition
| Others |
| SE | Sports Editor
| Others |
| SE | Sports Entertainer
| Others |
| SE | Sports Entertainment
| Others |
| SE | Sports Extra
| Others |
| SE | Spyder Edition
| Others |
| SE | Squamous Epithelium
| Others |
| SE | Stahnke Electronics
| Others |
| SE | Stalking Evil
| Others |
| SE | Stand for Electric
| Others |
| SE | Stand for Exactly
| Others |
| SE | Standard Edition
| Others |
| SE | Standard Elite
| Others |
| SE | Standard Engine
| Others |
| SE | Standard English
| Others |
| SE | Standard Error
| Others |
| SE | Standardized Extract
| Others |
| SE | Stark Enterprises
| Others |
| SE | Starr-Edwards
| Others |
| SE | Start Edition
| Others |
| SE | Start End
| Others |
| SE | Starter Edition
| Others |
| SE | Stat Editor
| Others |
| SE | Status Epilepticus
| Others |
| SE | Stimulated Emission
| Others |
| SE | Street Edition
| Others |
| SE | Stress Echocardiography
| Others |
| SE | Structural Engineer
| Others |
| SE | Structure Engineer
| Others |
| SE | Structured Expression
| Others |
| SE | Student Edition
| Others |
| SE | Student Exercises
| Others |
| SE | Student Experiment
| Others |
| SE | Studio Edition
| Others |
| SE | Sub-clinical Encephalopathy
| Others |
| SE | Sub-Epidermal
| Others |
| SE | Substandard Edition
| Others |
| SE | Substantially Equal
| Others |
| SE | Substantially Equivalent
| Others |
| SE | Sud Est
| Others |
| SE | Sud-Est
| Others |
| SE | Sugar Enhanced
| Others |
| SE | Super Effective
| Others |
| SE | Super Exciting
| Others |
| SE | Super Expensive
| Others |
| SE | Super Extendo
| Others |
| SE | Superb Excellence
| Others |
| SE | Superior Experience
| Others |
| SE | Supervisory Edition
| Others |
| SE | Support Equipment
| Others |
| SE | Surface Effect
| Others |
| SE | Surveillance Enhanced
| Others |
| SE | Susan Eloise
| Others |
| SE | Svend Erik
| Others |
| SE | Sweat Equity
| Others |
| SE | Sweden
| Others |
| SE | Swingers Europe
| Others |
| SE | Sylvania East
| Others |
| SE | Symmetry Equivalent
| Others |
| SE | Synthetic Environment
| Others |
| SE | System Element
| Others |
| SE | System Engineer
| Others |
| SE | System Error
| Others |
| SE | System Expansion
| Others |
| SE | System(s) Engineering
| Others |
| SE | Systematic Error
| Others |
| SE | Systems Engineering
| Others |
| SE | The Successor of E
| Others |
| SE | XL Airways France
| Others |