DNS may refer to: Domain Name System, Internet system to translate names into IP addresses Direct numerical simulation 3,5-Dinitrosalicylic acid Dinas Powys railway station, Wales National Rail station code DNS Doctor of Nursing Science — see Doctorate in Nursing Deviated septum or deviated nasal septum, a physical disorder of the nose involving a displacement of the nasal septum Distressed non-swimmer — see distressed swimmer Dragon NaturallySpeaking, speech recognition soft… (More on Dns)