Dao, Dão or DAO may refer to: Tao (Chinese: "The Way" 道), a philosophical concept Dao (Chinese sword) (刀), a type of Chinese sword Dao (Naga sword), a weapon and a tool of Naga people People and language Yao people, a minority ethnic group of Vietnam Dao language (Papuan), Indonesia Dao language (China) Dao (surname) (Đào), a Vietnamese surname Dao (Dungeons & Dragons), a type of genie in the game Dungeons & Dragons Dão (footballer) (born 1984), Brazilian football defender Places Dao (country subdivision) (Dào), historical political divisions in China translated as "circuits" Dao (state), a historical state during the Zhou dynasty Dao, Capiz, Philippines Dao County, in Yongzhou, Hunan, China Dão DOC, a wine region in Portugal Dão River, a river in Portugal Science and technology Biology D-amino acid oxidase, a peroxisomal enzyme Diamine oxidase, an enzyme also known as histaminase involved in the metabolism of histamine D-aspartate oxidase, in enzymology Dracontomelon dao, a species of tropical canopy tree known as dao in Filipino Computing Data access object, a design pattern used in object-oriented software engineering Jet Data Access Objects, a general programming interface for database access on Microsoft Windows systems Disk-at-Once, an optical disc recording mode Decentralized autonomous organization, an organization that is run through rules encoded as computer programs called smart contracts Other De-asphalted oil, a crude oil refinery process stream Double action only, a trigger mechanism for semi-automatic firearms Organizations Decentralized autonomous organization, a type of organization The DAO (organization), a former digital organization established in 2016 Defence Acquisition Organisation, the former name of the Australian Defence Materiel Organisation Dominion Astrophysical Observatory in Saanich, British Columbia, Canada Daallo Airlines (ICAO code) Arts and entertainment Dao (film), a film by Tsui Hark Dao (game), an abstract strategy game DAO (album), a 1996 album by jazz saxophonist David S. Ware Other uses Defense Attaché Office, the office for military matters at embassies; for example see Embassy of the United States, Tel Aviv See also Dão-Lafões, a region in Portugal Taoism Dau (disambiguation)