S23
S23 may refer to:
Aircraft[edit]
- Short S.23, a British flying boat
- Sikorsky S-23, a Russian bomber
Land transport[edit]
- S23 (Long Island bus), New York, U.S.
- S23 (Rhine-Ruhr S-Bahn), Germany
- Kita-Tatsumi Station, Osaka, Japan
- Kutchan Station, Hokkaido, Japan
Law[edit]
- 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[edit]
- S-23 (drug), a selective androgen receptor modulator
- 40S ribosomal protein S23
Submarines[edit]
- Chilean submarine Hyatt
- HMS Repulse, of the U.K.'s Royal Navy
- INS Kalvari, of the Indian Navy
- INS Karanj, of the Indian Navy
- USS S-23 (SS-128), of the U. S. Navy
Other uses[edit]
- 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