S24 may refer to:

Aviation Focke-Wulf S 24 Kiebitz, a German sport aircraft Sandusky County Regional Airport, in Ohio, United States Sikorsky S-24, a Russian biplane bomber Spalinger S.24, a prototype Swiss glider

Rail and transit S24 (St. Gallen S-Bahn), an S-Bahn service operating over the Altstätten–Gais railway line, Switzerland S24 (ZVV), a line of the Zurich S-Bahn, Switzerland Hirafu Station, in Kutchan, Hokkaido, Hokkaido, Japan Minami-Tatsumi Station, in Osaka, Japan

Other uses 40S ribosomal protein S24 County Route S24 (California), United States , a submarine of the Indian Navy S24: Avoid contact with skin, a safety phrase S-24 rocket, a Soviet rocket , a submarine of the United States Navy Samsung Galaxy S24, an Android smartphone series by Samsung Electronics