PDN may refer to:

Digital

• PDN Gateway (Packet Data Network Gateway),
• PDN Mail, electronic messaging developed by Prime Computer
• Public data network
• Paint.NET

File extension

• Portable Draughts Notation (.PDN), the standard computer format for recording draughts games
• .PDN, the native format for the graphics editing program Paint.NET

Publication

• Pacific Daily News, a newspaper based on Guam
• Photo District News, US publication for photographers

Entity

• Department of Physiology, Development and Neuroscience, University of Cambridge
• National Democratic Party (Argentina) (Partido Demócrata Nacional)

Other

• ISO 639:pdn or Podena language, spoken in Indonesia
• Phenotypic disease network (PDN)

This disambiguation page lists articles associated with the title PDN.
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