Do, DO or D.O. may refer to:

Languages

* The English verb, ''do'', which may serve as an auxiliary verb; see

do-support ''Do''-support (or ''do''-insertion), in English grammar, is the use of the auxiliary verb ''do'', including its inflected forms ''does'' and ''did'', to form negated clauses and questions as well as other constructions in which subject–auxili ...

* ''Do'' (kana), a mora symbol in Japanese writing * Ditto mark

People

* Đỗ, a Vietnamese surname * Do (surname), includes people with the surname * D.O. (entertainer) (born 1993), South Korean singer and actor * D.O. (rapper), Canadian rapper * Do (singer) (born 1981), Dutch singer * Marshall Applewhite (1931–1997), American cult leader

Music

The Dø The Dø is a Finnish- French indie pop band founded in Paris in 2005. The band is composed of Olivia Merilahti (singer and musician) and Dan Levy (multi-instrumentalist). The duo has been backed on stage by three different drummers: Jérémie ...

, a French/Finnish indie pop band * ''Do'' (Do album), an album by Dutch singer Do * ''Do'' (Psychostick album) * C (musical note), the first note of the musical scale in ''fixed do'' solfège * Delta Omicron, an international music fraternity * Do, the first syllable of the scale in solfège * Do, a type of buk (drum) used in Korean ritual music * "Do", a song by the White Stripes from the 1999 album ''The White Stripes'' (album)

Science and medicine

* ''

The DO ''The DO'' is a monthly online magazine published by the American Osteopathic Association. According to its website, the magazine "contains news of the osteopathic profession and its members, articles of professional and personal interest to osteo ...

'', an online magazine published by the American Osteopathic Association * Dansgaard–Oeschger event, in climate science * Delta Omega, an American public health honorary society * Doctor of Osteopathic Medicine * Dissolved oxygen

Technology

.do .do is the ''country code top-level domain A country code top-level domain (ccTLD) is an Internet The Internet (or internet) is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) t ...

, the country code top level domain for the Dominican Republic *

Dornier Flugzeugwerke Dornier Flugzeugwerke was a German aircraft manufacturer founded in Friedrichshafen in 1914 by Claude Dornier. Over the course of its long lifespan, the company produced many designs for both the civil and military markets. History Originally ...

, a defunct German aircraft manufacturer * GNOME Do, an application launcher for Linux * Dō, the torso protection in a suit of

kendo armor is a modern Japanese martial art, descended from kenjutsu (one of the old Japanese martial arts, swordsmanship), that uses bamboo swords ( shinai) as well as protective armor ( bōgu). Today, it is widely practiced within Japan and has sprea ...

Places

* Do (province), the Korean and Japanese administrative division equivalent to the ancient Chinese dao * Do (administrative division), an administrative unit in both North and South Korea * Do (Berkovići), Bosnia and Herzegovina * Do (Hadžići), Bosnia and Herzegovina * Do, Stolac, Bosnia and Herzegovina * Do (Trebinje), Bosnia and Herzegovina * Do, Ivory Coast * Dominican Republic

Other uses

* ''DO'' (film) *

Dō (philosophy) ''Tao'' or ''Dao'' is the natural order of the universe, whose character one's intuition must discern to realize the potential for individual wisdom, as conceived in the context of East Asian philosophy, East Asian religions, or any other philo ...

, a doctrine or lifestyle in Japanese and Korean cultures * Delivery order * Denominación de origen, a Spanish wine appellation * Directorate of Operations (CIA) of the United States Central Intelligence Agency * Dominicana de Aviación, a defunct Dominican airline * Do, the number twelve in the

duodecimal The duodecimal system (also known as base 12, dozenal, or, rarely, uncial) is a positional notation numeral system using twelve as its base. The number twelve (that is, the number written as "12" in the decimal numerical system) is instead wri ...

system