| SSEC | Saigon Sky Exhibition Center (Ho Chi Minh City, Vietnam) 
| Others |
| SSEC | Sarnia Sports & Entertainment Centre
| Others |
| SSEC | Sarnia Sports and Entertainment Centre (Canada)
| Others |
| SSEC | Scottish Social Enterprise Coalition
| Others |
| SSEC | Secondary Schools Examinations Council
| Others |
| SSEC | Selective Sequence Electronic Calculator
| Others |
| SSEC | Senior System Engineering Council
| Others |
| SSEC | Shanghai Stock Exchange Composite (index; China)
| Others |
| SSEC | Shantilal Shah Engineering College
| Others |
| SSEC | Shirdi Sai Engineering College (India)
| Others |
| SSEC | Shri Shankaracharya Engineering College
| Others |
| SSEC | Singapore Standard Educational Classification (Singapore)
| Others |
| SSEC | Singlespeed European Championship (bicycle race)
| Others |
| SSEC | Sinopec Shanghai Engineering Company Limited (China)
| Others |
| SSEC | SKA (Square Kilometre Array) Science and Engineering Committee
| Others |
| SSEC | Small Signal Equivalent Circuit
| Others |
| SSEC | Social Science Education Consortium
| Others |
| SSEC | Society for the Study of Early China
| Others |
| SSEC | Society for the Study of Early Christianity
| Others |
| SSEC | Society for the Study of Early Christianity (Australia)
| Others |
| SSEC | Soft Sector
| Others |
| SSEC | Solar System Exploration Committee (NASA)
| Others |
| SSEC | Solid State Electronics Center (Honeywell)
| Others |
| SSEC | Solid State Equipment Corporation (Horsham, PA)
| Others |
| SSEC | Sound Surveillance Evaluation Center
| Others |
| SSEC | Source Selection Evaluation Committee
| Others |
| SSEC | South Sea Evangelical Church (Solomon Islands)
| Others |
| SSEC | South Seas Evangelical Church
| Others |
| SSEC | South Shore Educational Collaborative (Hingham, MA)
| Others |
| SSEC | Southern Solar Energy Center
| Others |
| SSEC | Southernmost Branch of the South Equatorial Current
| Others |
| SSEC | Southwest Systems Engineering Corporation (est. 1991; Sierra Vista, AZ)
| Others |
| SSEC | Space Science and Engineering Center
| Others |
| SSEC | Sri Sairam Engineering College (est. 1995; India)
| Others |
| SSEC | Static Source Error Correction
| Others |
| SSEC | Stepping Stone Educational Centre
| Others |
| SSEC | Structural Steel Educational Council
| Others |
| SSEC | Student Section Executive Committee
| Others |
| SSEC | Student Stock Exchange Concilium (McGill University)
| Others |
| SSEC | Surface Ship Engineering Center
| Others |
| SSEC | Sutherland Shire Environment Centre (Australia)
| Others |
| SSEC | Suzhou Samsung Electronics Co., Ltd. (China)
| Others |