BDK

BDK may refer to:
 * Big Daddy Kane, an American rapper.
 * Bruderschaft des Kreuzes, a professional wrestling stable in Chikara
 * Budukh language (ISO-639-3 code)
 * Bukkyo Dendo Kyokai, a Japanese organization devoted to translating and disseminating Buddhist literature
 * Bundu dia Kongo, a politico-religious group in Bas Kongo, Democratic Republic of the Congo
 * Federation of German Detectives (Bund Deutscher Kriminalbeamter)
 * Quebec comics, called by some in the 1970s Bande dessinée kébécoise