S29

S29 may refer to:

Aircraft

 * Blériot-SPAD S.29, a French sport biplane
 * Saab 29 Tunnan, a Swedish fighter aircraft
 * Short S.29 Stirling, a British heavy bomber
 * Sikorsky S-29, an American biplane airliner

Rail and transit

 * S29 (Long Island bus)
 * S29 (ZVV), a regional railway line of the Zürich S-Bahn
 * Neppu Station, in Kuromatsunai, Suttsu District, Hokkaido, Japan

Roads

 * County Route S29 (California)
 * County Route S29 (Bergen County, New Jersey)
 * Route 179 (Pennsylvania–New Jersey), partially numbered New Jersey Route S29 until 1953

Other uses

 * 40S ribosomal protein S29
 * British NVC community S29, a swamps and tall-herb fens community in the British National Vegetation Classification system
 * HMS Victorious (S29), a submarine of the Royal Navy
 * S29: Do not empty into drains, a safety phrase
 * Sulfur-29, an isotope of sulfur
 * USS S-29 (SS-134), a submarine of the United States Navy