S8
- 8S (disambiguation)
- Audi S8
- Brussels Regional Express Network
- Expressway S8 (Poland)
- Line S8 (Nanjing Metro)
- London Underground S7 and S8 Stock
- Octasulfur
- S-8 (rocket)
- S8 (Berlin)
- S8 (Milan suburban railway network)
- S8 (Munich)
- S8 (RER Vaud)
- S8 (Rhine-Main S-Bahn)
- S8 (Rhine-Ruhr S-Bahn)
- S8 (ZVV)
- S8 (classification)
- Sagittarius A* cluster
- Samsung Galaxy S8
- Samsung Galaxy Tab S8
- Short S.8 Calcutta
- Stagecoach Gold bus route S8
- Styria S-Bahn
- Tyrol S-Bahn