S3

S3 or S-3 may refer to:

Film

*Superman III
*S3 Films

Transportation

Aviation

* Santa Barbara Airlines IATA airline designator
* S03, Ashland Municipal Airport FAA LID

Locomotives

* North Eastern Railway Class S3, a steam locomotive
* Prussian S 3, a steam locomotive

-Bahn lines

* S3 (Berlin), a S-Bahn line
* a planned Bremen S-Bahn line
* S3 (Dresden), a S-Bahn line
* a Hamburg S-Bahn line
* a Hanover S-Bahn line
* a Nuremberg S-Bahn line
* a RheinNeckar S-Bahn line
* a Rhein-Ruhr S-Bahn line
* a Rhine-Main S-Bahn line
* a Rostock S-Bahn line
* a Stuttgart S-Bahn line
* a Zürich S-Bahn line

Cars

* Audi S3

Roads

* County Route S3 (California), a county route in California

Military

*S3 (military), the operations officer in military units
*S-3 Viking, an airplane
*S3 ICBM, a French nuclear missile now out of commission
*USS S-3 (SS-107), a US Navy submarine
* Norrlands signalregemente, a Swedish regiment

Computers

* S3 Graphics, a computer hardware company
* S3 Texture Compression
* Amazon S3, an online data storage service
* S3 (programming language), a language used to write the VME operating system and much other system software on the ICL 2900 Series
* S3, a standby mode an ACPI-compliant computer can be in. It is more formally called ACPI S3
* S3 Matching Technologies, a data quality management software company
* S3 Plan, a fictitious program in the "Metal Gear Solid 2: Sons of Liberty" video game

Electronics

* Canon PowerShot S3 IS, a 2006 6.0 megapixel digital camera
* FinePix S3 Pro, a 2004 interchangeable lens digital single-lens reflex camera by Fujifilm
* Nikon S3, a 1953 35 mm film camera
* Nikon Coolpix S3 a 6 million pixels digital camera
* Siemens S3, a Siemens mobile phone
* S03 (Yamaha), a music synthesizer

Mathematics

*A specific modal logic
* Dihedral group of order 6 (isomorphic to $S\_3$), in group theory, the symmetric group of order $3!=6$
* The 3-dimensional sphere S³

Medecine or anatomy

* the third sacral vertebra of the vertebral column, in human anatomy
* the sacral spinal nerve 3, a spinal nerve of the sacral segment
* S₃, an occasionally present third heart sound

Other

* "", a Dungeons & Dragons adventure module
* , a safety phrase in chemistry
* S3 National Highway, a National Highways of Pakistan
* S3 (Robot)
* British NVC community S3, a Swamps and tall-herb fens community in the British National Vegetation Classification systemand also :
* an abbreviation for Schedule 3, an Australian legal category assigned to drugs
* _S3, an online science magazine published by super/collider
* S postcode area, covering areas of inner Sheffield
* trisulfur, an allotrope of sulfur