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.