DO

DO may refer to:

• Directorate of Operations, former name of the National Clandestine Service
• Doctor of Osteopathic Medicine, a degree held by physicians in the United States
• Dominican Republic, ISO country code: do
  • .do, the country code top level domain (ccTLD) for Dominican Republic
• IATA airline code for Dominicana de Aviación, an airline of the Dominican Republic in 1944–1995
• IATA airline code for Air Vallée
• Delta Omicron, an international music fraternity
• Denominación de Origen, a Spanish wine appellation
• Diesel oil or diesel fuel
• Dissolved oxygen or oxygen saturation, a measure of oxygen dissolved in a medium
• D/O, or delivery order, a legal document
• Diffractive optics, a type of lens on the Canon EF lens mount
• Evolution-Data Optimized, a wireless radio broadband data standard
• DO, one of the prosigns for Morse code
• Discouraged Ones, a 1998 album by Katatonia
• Do., an abbreviation for Ditto mark
• Daansgard-Oeschger cycles, a solar forcing-based climatic temperature cycle

See also

• Do (disambiguation)
• Doh (disambiguation)

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