DTO

DTO may refer to:


 * Data transfer object
 * Detailed Test Objective, an experiment to be performed by NASA in space
 * Download to own
 * Deodorized tincture of opium
 * Diluted tincture of opium
 * Disruptive Technology Office
 * Disney's Toontown Online
 * Driverless train operation
 * Drug trafficking organizations
 * Domestic terrorist organization
 * Denton Municipal Airport (IATA and FAA airport codes)
 * "D.T.O.": a song on Vision of Disorder (album), the self-titled debut by the American metalcore band
 * Denkmäler der Tonkunst in Österreich (Monuments of Fine Austrian Music), a book series