S25

S25 can refer to:

Aircraft

• Blériot-SPAD S.25, a French biplane
• Letov Š-25, a Czechoslovak biplane trainer
• Short S.25 Sandringham, a British flying boat airliner
• Short S.25 Sunderland, a British flying boat bomber
• Sikorsky S-25, a Russian biplane bomber
• Spalinger S.25, a Swiss training glider

Roads

• County Route S25 (California)
• County Route S25 (Bergen County, New Jersey)
• New Jersey Route 413, numbered S25 until 1953

Rail and transit

• S25 (Berlin), a line on the Berlin S-Bahn, Germany
• S25 (Long Island bus), United States
• S25 (St. Gallen S-Bahn), an S-Bahn service operating over the Rorschach–Heiden railway line, Switzerland
• S25 (ZVV), a line of the Zurich S-Bahn, Switzerland
• S25, an Aargau S-Bahn line, Switzerland
• Niseko Station, in Hokkaido, Japan

Other uses

• S-25 (rocket), a Soviet air-to-ground rocket
• 40S ribosomal protein S25, a eukaryote-specific protein
• British NVC community S25, a swamps and tall-herb fens community in the British National Vegetation Classification system
• INS Vagir (S25), a submarine of the Indian Navy
• S25: Avoid contact with eyes, a safety phrase
• S-25 Berkut, a Soviet surface-to-air missile system
• Siemens S25, a Siemens Mobile phone
• USS S-25 (SS-130), a submarine of the United States Navy
• S25, a postcode district in Sheffield, England
• Samsung Galaxy S25, a series of high-end Android smartphones developed by Samsung Electronics