S44

S44 may refer to:

Transport

• S44 (New York City bus), serving Staten Island, United States
• S44 (St. Gallen S-Bahn), a railway service in Switzerland
• S44, a line of the Lucerne S-Bahn in Switzerland
• GER Class S44, a British steam locomotive
• New Jersey Route 324, designated Route S44 until 1953

Navy

• Template:INS, a submarine of the Indian Navy
• , a submarine of the United States Navy

Other uses

• Sulfur-44, an isotope of sulfur
• S44, a postcode district in Chesterfield, England