PDK may refer to:
Politics
- Democratic Party of Kosovo (Albanian: Partia Demokratike e Kosovës), a political party in Kosovo
- Kurdistan Democratic Party
- Kurdistan Democratic Party (Iran)
- Party of Democratic Kampuchea
- PDK International, an organization for educators
- The Christians (Norway) (Norwegian: Partiet De Kristne), a political party in Norway
Places
- DeKalb–Peachtree Airport, Atlanta, Georgia, US
- Pind Dadan Khan, Punjab, Pakistan
Science and technology
- Porsche Doppelkupplungsgetriebe, Porsche's dual-clutch transmission
- Process design kit, files for semiconductor manufacture
- Polydiketoenamine, a polymer
- Phosphoinositide-dependent kinase
- Pyruvate dehydrogenase kinase
Other
- PDK (Namibian music group)