S23

S23 may refer to: Aircraft Short S.23, a British flying boat Sikorsky S-23, a Russian bomber

Land transport S23 (Long Island bus), New York, U.S. S23 (Cologne S-Bahn), Germany S23 (St. Gallen S-Bahn), an S-Bahn service operating over the Gossau–Wasserauen railway line, Switzerland S23 (ZVV), a Zurich S-Bahn service, Switzerland S23, an Aargau S-Bahn line, Switzerland Kita-Tatsumi Station, Osaka, Japan Kutchan Station, Hokkaido, Japan

Law Patent Reform Act of 2011, a failed bill of the U.S. Congress S23: Do not breathe gas/fumes/vapour/spray (appropriate wording to be specified by the manufacturer), in the E.U. Dangerous Substances Directive

Medicine S-23 (drug), a selective androgen receptor modulator 40S ribosomal protein S23

Submarines

, of the U.K.'s Royal Navy , of the Indian Navy , of the Indian Navy , of the U. S. Navy

Other uses 180 mm gun S-23, a Soviet heavy gun British NVC community S23, a designation for swamp and fen habitats Samsung Galaxy S23, a 2023 series of smartphones Special publication S-23 of the International Hydrographic Organization (IHO) named Limits of Oceans and Seas