ND

ND may refer to:

In arts and entertainment

• Nancy Drew, a character in the series of books and video games with the same name
• Naughty Dog, an American video game developer
• Nuclear Dawn, a mod for the game Half-Life 2
• nD, a type of alien in the United Kingdom TV series Invasion Earth

Businesses

• Norsk Data, a defunct Norwegian computer manufacturer
• NetDocuments, a document management company

Places

• North Dakota, a state in the United States
• New Delhi, India
• Notre Dame (disambiguation), the name of a number of churches and colleges

In politics

• New Democracy (Canada), a former political party in Canada
• New Democracy (Greece), one of the main center-right liberal political parties in Greece
• National Democrats (Sweden), a far-right political party in Sweden
• Nuclear disarmament, the dismantlement and proposed dismantling of nuclear weapons

In science and technology

In linguistics

• Nd (digraph), a digraph present in many African languages
• Northern Ndebele language, by ISO 639-1 code

In medicine

• NADH dehydrogenase, an enzyme
• Non-distended, an abdominal distension clinical examination value
• Doctor of Naturopathic Medicine, a degree in naturopathic medicine
• Notifiable disease, any disease that is required by law to be reported to government authorities

In physics

• Neodymium, an element with the symbol "Nd"
• ND Experiment, a particle physics experiment in Novosibirsk, Russia
• n_D, the refractive index of a medium at a wavelength of 589.8 nm

In technology

• Neutral density filter, a type of filter used in photography
• Contax N Digital, a digital camera

In scientific literature

• no date, "...there is no date and no author, your text citation would include the title (or short title) "n.d." for no date, and paragraph number (e.g., "Heuristic," n.d., para. 1). The entry in the reference list might look something like this: Heuristic. (n.d.). In Merriam-Webster’s online dictionary (11th ed.)"

Other uses

• National Diploma (Ireland), an academic qualification in the Republic of Ireland
• Navy Diver, an occupational rating in the U.S. Navy
• Negligent discharge, an accidental discharge of a firearm
• New Dawn (disambiguation), various meanings
• Norrlands dragonregemente, a cavalry regiment of the Swedish Army
• Notitia Dignitatum, a historical document of the late Roman empire
• Nuclear disarmament, the dismantlement and proposed dismantling of nuclear weapons