Ostenfeld may refer to:

• Ostenfeld, Nordfriesland, a municipality in Schleswig-Holstein, Germany
• Ostenfeld, Rendsburg-Eckernförde, a municipality in Schleswig-Holstein, Germany
• Asger Skovgaard Ostenfeld, a Danish civil engineer
• Carl Hansen Ostenfeld, a Danish botanist

• Andrew Still
• Andrew Stimpson
• Andrew Stimpston
• Andrew St. John
• Andrew St John
• Andrew St. John 2
• Andrew St John, 21st Baron St John of Bletso
• Andrew Stockdale
• Andrew Stone, Baron Stone of Blackheath
• Andrew Stone (MP)
• Andrew Stoner
• Andrew Strempler
• Andrew Stuart
• Andrew Stuart (Canadian politician)
• Andrew Stuart (Ohio)
• Andrew Stuart (seigneur)
• Andrews, TX μSA
• Andrew Sublette
• Andrew Sudduth
• Andrew Sullivan (basketball)
• Andrew Sumner
• Andrews University Press
• Andrews University School of Business
• Andrews University Seminary Studies
• Andrew Supanz