S11
- 40S ribosomal protein S11
- ALCO S-11
- Brazilian submarine Rio Grande do Sul (S11) (Balao class)
- Brazilian submarine Rio Grande do Sul (S11) (Tench class)
- Breisgau S-Bahn
- County Route S11 (California)
- Expressway S11 (Poland)
- Fokker S-11
- Hamburg S-Bahn
- Karlsruhe Stadtbahn
- Kitanada Station
- LSWR S11 class
- Line S11 (Milan suburban railway service)
- Morishita Station (Tokyo)
- Myōhōji Station (Hyōgo)
- Nissan Silvia (S11)
- Project S-11
- Rans S-11 Pursuit
- S postcode area
- S11 (Cologne S-Bahn)
- S11 (ZVV)
- S11 (classification)
- S11 (protest)
- S11 highway (Georgia)
- SABCA S.11
- SPAD S.XI
- Sakurayama Station
- Scattering parameters
- September 11 attacks
- Sharktopus
- Sikorsky S-11
- Sri Lanka Railways S11
- Wutthakat BTS station
- Zenibako Station