NADK may refer to:

• NAD⁺ kinase, an enzyme
• National Army of Democratic Kampuchea, a Cambodian guerrilla force

• Ziraat Bankası S.K.
• Zir Ab (disambiguation)
• Zirahuen
• Zirahuen allotica
• Zirahuen Allotica
• Zirahuen Allotoca
• Zirahuen allotoca
• Zirahuén Allotica
• Zirahuén allotica
• Zirahuén Allotoca
• Zira (India)
• Zirak
• Zira Khel
• Zira Nawan
• Zirandaro de los Chavez
• Zirankexuejijin
• Zirany
• Zirara
• Ziras Parish
• Zirc Arboretum
• Zirconate
• Zircon (disambiguation)
• Zirconic acid
• Zirconium-100
• Zirconium-101