DO

DO may refer to:

Codes

• 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

Grammar and punctuation

• Direct object, the object that is being acted upon (by a verb)
• Do., an abbreviation for Ditto mark

Music

• Discouraged Ones, a 1998 album by Katatonia
• Delta Omicron, an international music fraternity
• The Dø, indie-pop duo
• D.O. (singer), a member of the Chinese-South Korean boy band EXO

Science

• Daansgard-Oeschger cycles, a solar forcing-based climatic temperature cycle
• Delta Omega, an American public health honorary society
• Dissolved oxygen or oxygen saturation, a measure of oxygen dissolved in a medium
• Doctor of Osteopathic Medicine, a degree held by physicians in the United States

Technology

• Evolution-Data Optimized, a wireless radio broadband data standard
• Diffractive optics, a type of lens on the Canon EF lens mount

Other

• DO (film)
• D/O, or delivery order, a legal document
• Diesel oil or diesel fuel
• Directorate of Operations (CIA)
• Directorate of Operations (DIA)
• Denominación de Origen, a Spanish wine appellation
• The DO, a monthly magazine about osteopathic medicine

See also

• Do (disambiguation)
• D0 (disambiguation) (D followed by zero)
• Doh (disambiguation)