S3

S3, S-3 or S03 may refer to:

• S3 Plan, a fictitious program in the Metal Gear Solid 2: Sons of Liberty video game
• Si3 (flim), originally titled S III and also known as Singam 3, the third film in the Singam franchise
• Expedition to the Barrier Peaks, code S3, a 1980 Dungeons & Dragons adventure module

Airlines

• Ashland Municipal Airport, FAA Location identifier S03, in Oregon, US
• SBA Airlines, IATA code S3, based in Caracas, Venezuela

Locomotives

• ALCO S-3, an American diesel switching (shunting) locomotive; see ALCO S-1 and S-3
• NER Class S3, a North Eastern Railway steam locomotive
• Prussian S 3, a steam locomotive

Rail lines

• S3 (Berlin), a S-Bahn line
• S3 (Munich), an S-Bahn line in Bavaria, Germany
• S3 (Nuremberg), an S-Bahn line in Bavaria, Germany
• S3 (Rhine-Ruhr S-Bahn), an S-Bahn line in North Rhine-Westphalia, Germany
• S3 (ZVV), a line of the S-Bahn Zürich in Switzerland
• Line S3 (Milan suburban railway service), an Italian commuter rail route
• S3, a Dresden S-Bahn line
• S3, a Hamburg S-Bahn line
• S3, a Hanover S-Bahn line
• S3, a Rhein-Neckar S-Bahn line
• S3, a Rostock S-Bahn line
• S3, a Stuttgart S-Bahn line
• S3, a S-Bahn Steiermark line

Cars

• Audi S3, a version of the Audi A3 small family car
• Bentley S3, a four-door luxury car produced by Bentley from late 1962 until 1965
• Luxgen S3, a sedan produced by Taiwanese-based manufacturer Luxgen starting from 2016
• S3 Roadster, a car produced by South African-based manufacturer Birkin Cars

Roads

• S3 Shanghai–Fengxian Highway, a planned expressway in Shanghai, China
• S-3 Strategic Highway, operated by the Pakistan Ministry of Defence; see National Highways of Pakistan (even though it is not actually a National Highway)
• Expressway S3 (Poland), a planned major road in Poland
• California County Route S3, from State Route 78 to Borrego Springs over the Yaqui Pass; see California County Routes in zone S

Others

• Stagecoach Gold bus route S3, a bus route in Oxfordshire, England
• AJS S3 V-twin, a British motorcycle

• Swiss Space Systems (S-3), an aerospace company in Switzerland
• S3 Safe Sex Store, an assumed name of Michigan corporation BAK
• SThree, a British recruitment agency

• S3 (missile), a French nuclear missile now out of commission
• Lockheed S-3 Viking, an American anti-submarine aircraft developed in the 1970s
• S.3 Springbok, a British aerial reconnaissance aircraft of the 1920s; see Short Springbok
• USS S-3 (SS-107), a U.S. Navy submarine
• Norrland Signal Battalion, designation S 3, a Swedish signal unit
• S3, the operations officer in military units; see Staff (military)

• Trisulfur, chemical formula (S₃), an allotrope of sulfur
• S-phrase 3, also referred to as S3, "Keep in a cool place", a safety phrase in chemistry; see List of S-phrases
• British NVC community S3, Carex paniculata swamp; see Swamps and tall-herb fens in the British National Vegetation Classification system

Computing

• S3 Graphics, a computer-hardware company
• S3 Group, an Irish software company
• S3 Texture Compression, a group of lossy texture compression algorithms
• Amazon S3 (Amazon Simple Storage service), 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 in the Advanced Configuration and Power Interface (ACPI) specification
• Samsung Galaxy S III, or Samsung Galaxy S3, a smartphone: the successor to the Samsung Galaxy S II
  • Samsung Galaxy S III Mini, or Samsung Galaxy S3 Mini, the mini version of the Samsung Galaxy S III
• Samsung Gear S3, a 2016 smartwatch
• Snapdragon S3, a Qualcomm ARM system-on-a-chip; see List of Qualcomm Snapdragon systems-on-chip

Electronics

• Canon PowerShot S3 IS, a 2006 digital camera; see Canon PowerShot S
• 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 digital camera
• Samsung YP-S3, often referred to as the Samsung S3, an MP3 Player
• Siemens S3, a Siemens Mobile phone

Mathematics

• S₃, the symmetric group of degree 3; see Dihedral group of order 6
• S³, the 3-sphere (a 3-manifold in four-dimensional space)

Medicine and anatomy

• Sacral spinal nerve 3, a spinal nerve of the sacral segment
• Third heart sound, or S₃, a rare extra heart sound
• ATC code S03, Ophthalmological and otological preparations, a subgroup of the Anatomical Therapeutic Chemical Classification System
• S3, the third sacral vertebra; see sacrum

• S3 Asia MBA, a selective dual-degree, tri-city, tri-university global MBA program
• S3 (classification), a classification for swimmers based on their level of disability
• Form S-3, a registration form used by the U.S. Securities and Exchange Commission
• S postcode area, covering areas of inner Sheffield, England
• Third year, Scottish secondary education for pupils aged about 14

• 3S (disambiguation)
• Schedule 3 (disambiguation)