USD (disambiguation)

USD is an abbreviation for the United States dollar, the official currency of the United States.

USD may also refer to:
 * Ultrasonic Silent Drive, Tamron lens designation
 * Under Secretary of Defense, United States
 * Unified school district
 * Unité spéciale de détention (USD), the French name of the Special Handling Unit (SHU) at the Regional Reception Centre, a Canadian prison
 * Sanata Dharma University (Universitas Sanata Dharma), Indonesia
 * University of San Diego, San Diego, California, United States
 * University of South Dakota, Vermillion, South Dakota, United States
 * Universal Scene Description, an open-source graphics framework by Pixar, and associated .usd file format
 * The Upside Down, Houdini's term for the Chinese Water Torture Cell
 * Upside-down motorcycle fork