SEF
- Athens
- China
- Dodd–Frank Wall Street Reform and Consumer Protection Act
- Eye movement (sensory)
- Freeways in Australia
- Greek language
- India
- Peace and Friendship Stadium
- Philanthropy
- Sankara Eye Foundation
- Seaford railway station (England)
- Sef Gonzales
- Sef, Iran (disambiguation)
- Serviço de Estrangeiros e Fronteiras
- Sinfonia Educational Foundation
- Small Enterprise Foundation
- South Eastern Freeway
- Special Emergency Force
- Spectral edge frequency
- Straits Exchange Foundation
- Supplementary eye fields
- Swap (finance)
- Swap Execution Facility
- Sweden
- Swedish Electricians' Union
- Swedish Elite Football
- Taiwan