BDK may refer to:
Bradykinin receptor B2 is a G-protein coupled receptor for bradykinin, encoded by the BDKRB2 gene in humans.
Bradykinin receptor B1 (B1) is a G-protein coupled receptor encoded by the BDKRB1 gene in humans. Its principal ligand is bradykinin, a 9 amino acid peptide generated in pathophysiologic conditions such as inflammation, trauma, burns, shock, and allergy.
The Bund der Deutschen Katholischen Jugend (BDKJ) is the umbrella of Catholic youth organizations in Germany.
Bhaskar Dattatraya Kulkarni (born 1949), popularly known as B. D. among his friends and colleagues, is an Indian chemical reaction engineer and a Distinguished Scientist of Chemical Engineering and Process Development at the National Chemical Laboratory, Pune.
Bulaki Das Kalla (born October 4, 1949) or Dr. B.D. Kalla, as he is popularly known, is a name in the Indian social and political arenas.
Bhaurao Dewaji Khobragade (25 September 1925 – 23 April 1984) was a lawyer and member of the Rajya Sabha at various times from 1958 to 1984, and was its deputy chairman from 1969 to 1972.
BDO is an international network of public accounting, tax and advisory firms which perform professional services under the name of BDO.