SPL
- Amsterdam Airport Schiphol
- Finnish Wood Workers' Union
- Football Association of Finland
- Human penis size
- JOVIAL
- Private pilot licence
- RoboCup Standard Platform League
- Sammarineses for Freedom
- Saudi Post
- Saudi Professional League
- Saurashtra Premier League
- Scanning probe lithography
- Scottish Poetry Library
- Scottish Premier League
- Scouting
- Secondary Program Loader
- Secular Pro-Life
- Senior Patrol Leader
- Service de police de Longueuil
- Shakespeare Programming Language
- Singapore Premier League
- Slovenian PrvaLiga
- Socialist Party of Latvia
- Software product line
- Solana (blockchain platform)
- Sound pressure level
- Spl (Unix)
- Spore photoproduct lyase
- SportPesa Premier League
- Standard PHP Library
- Structured Product Labeling
- Sun Public License
- Superior parietal lobule
- Swiss Promotion League
- System programming language
- Systems Programming Language