PPDK may refer to:

• Pyruvate, phosphate dikinase, an enzyme
• Democratic Party of Kosovo

• Phineas and ferb One Good Scare Ought to Do It!
• Phineas and Ferb: Ride Again
• Phineas and Ferb's Christmas Vacation
• Phineas and Ferb (season 1)
• Phineas and Ferb (season 2)
• Phineas and Ferb (season 3)
• Phineas and Ferb (soundtrack)
• Phineas and Ferb's Quantum Boogaloo
• Phineas and Ferb: Summer Belongs To You
• Phineas and Ferb: Summer Belongs To You!
• Phineas And Ferb The Movie
• Phineas and Ferb the Movie: Across the 2nd Dimension
• Phineas and Ferb (video game)
• Phineas And Furb
• Phineas Banning High School
• Phineas Banning Senior High School
• Phineas Bowles
• Phineas Bowles (1690-1749)
• Phineas Bowles (British Army officer, born 1690)
• Phineas Bowles (British Army officer, died 1722)
• Phineas Bowles (d. 1722)
• Phineas Bowles (disambiguation)
• Phineas Chapman Lounsbury
• Phineas Chapman Lounsbury House
• Phineas C. Lounsbury