S3
- 3-sphere
- 3S (disambiguation)
- AJS S3 V-twin
- ALCO S-1 and S-3
- ATC code S03
- Advanced Configuration and Power Interface
- Amazon S3
- Ashland Municipal Airport
- Audi A3
- Basel S-Bahn
- Bentley S3
- Birkin Cars
- Breisgau S-Bahn
- California county routes in zone S
- Carinthia S-Bahn
- Dihedral group of order 6
- Dresden S-Bahn
- Expedition to the Barrier Peaks
- Expressway S3 (Poland)
- FinePix S3 Pro
- Form S-3
- Hamburg S-Bahn
- Hanover S-Bahn
- Infinix Hot S3
- Line S3 (Milan suburban railway service)
- List of S-phrases
- Lockheed S-3 Viking
- Lucerne S-Bahn
- Luxgen S3
- NER Class S3
- National Highways of Pakistan
- Nikon Coolpix S3
- Nikon S3
- Norrland Signal Battalion
- Prussian S 3
- Rhein-Neckar S-Bahn
- Rostock S-Bahn
- S postcode area
- S3 (Berlin)
- S3 (Munich)
- S3 (Nuremberg)
- S3 (RER Vaud)
- S3 (Rhine-Main S-Bahn)
- S3 (Rhine-Ruhr S-Bahn)
- S3 (St. Gallen S-Bahn)
- S3 (ZVV)
- S3 (classification)
- S3 (missile)
- S3 (programming language)
- S3 Asia MBA
- S3 Graphics
- S3 Group
- S3 Safe Sex Store
- S3 Shanghai–Fengxian Highway
- S3 Texture Compression
- SABC 3
- SBA Airlines
- SThree
- Sacral spinal nerve 3
- Salzburg S-Bahn
- Samsung Galaxy S III
- Samsung Galaxy S III Mini
- Samsung Galaxy Tab S3
- Samsung Gear S3
- Samsung YP-S3
- Schedule 3 (disambiguation)
- Short Springbok
- Si3 (film)
- Siemens Mobile
- Stagecoach Gold bus route S3
- Stuttgart S-Bahn
- Styria S-Bahn
- Suicide lane
- Swamps and tall-herb fens in the British National Vegetation Classification system
- Swiss Space Systems
- Third heart sound
- Third year
- Trisulfur
- Tyrol S-Bahn
- USS S-3 (SS-107)
- Upper Austria S-Bahn
- Vienna S-Bahn
- Vorarlberg S-Bahn