DDK

DDK abbreviation may refer to:
 * In software development, a Driver Development Kit, including Microsoft Windows Driver Development Kit
 * In hull codes of United States Navy, an abolished surface combatant warship category 'Hunter-Killer Destroyer'
 * In medical signs, Dysdiadochokinesia, a type of cerebellar ataxia
 * In molecular biology, Cdc7/Dbf4 kinase, or Dbf4-dependent kinase, — protein kinase required for initiation of eukaryotic DNA replication.
 * In snooker, a Dreaded Double Kiss, coined by Dennis Taylor
 * DDK, the National Rail station code for Dagenham Dock railway station, London, England
 * Daniel Dae Kim (born 1968), South Korean-born American actor

DDK