Dek or DEK may refer to: Dek language Dek Island, Ethiopia Dek (news), subhead Dek, a proposed name for digit 10 (↊) in duodecimal DEK (gene), a human gene Dek, Qazvin, a village in Iran German Evangelical Church Confederation (German: ; 1922–1933) German Evangelical Church in Bohemia, Moravia and Silesia Deutsche Einheitskurzschrift, a German stenography system Democratic National Party (Cyprus), a Greek Cypriot political party Diethyl ketone, a flammable chemical Donald Ervin Knuth, an American computer scientist, mathematician, and professor Dek (number), the 10th number in the Dozenal number system. Dek, a character in Predator: Badlands