NDN

NDN can mean:


 * NDN (gene), a gene found on chromosome 15 in humans and chromosome 7 in mice
 * Named data networking, a NSF-funded future internet architecture research project
 * New Democrat Network, an American think tank that promotes "centrist" Democratic candidates
 * Nigel Desmond Norman (1929–2002), British aircraft designer, his company NDN Aircraft, and their products:
 * NDN Firecracker, a single-engine aircraft designed as a military trainer
 * NDN Fieldmaster, a British agricultural aircraft of the 1980s
 * Shorthand spelling for Indian, a term that some Native Americans in the United States and some First Nations peoples in Canada use to refer to themselves
 * Necromancer's DOS Navigator, an orthodox file manager for DOS
 * Northern Distribution Network, part of NATO logistics in the Afghan War
 * Neodymium nitride, a chemical with the symbol NdN.