Nil often refers to the number zero.

Nil or NIL may also refer to:

• NIL (programming language), an implementation of the Lisp programming language
• Name, image and likeness, a set of rules for American college athletes to receive compensation
• Nanoimprint lithography, a method of fabricating nanometer scale patterns
• Nomina im Indogermanischen Lexikon ("Nominals in the Indo-European Lexicon"), an etymological dictionary
• North Island line, a proposed extension railway of Hong Kong

• Nil (band), a Japanese rock band
• The Nils, a Canadian punk rock band
• Non-Intentional Lifeform, an Australian hard rock band (1995–98)
• Nil (album), a 2006 album released by The Gazette
• "Nil", a song by Canadian punk band Gob

• Nil (given name), list of people with the given name
• Nil (surname), list of people with the surname

• Nil (cigarette), a brand of cigarette
• Nil: A Land Beyond Belief, a 2005 graphic novel
• Nil in the Indian numbering system
• Nil, Iran
• Nil ideal, a mathematical concept in ring theory
• Null pointer (sometimes written NULL, nil, or None), used in computer programming for an uninitialized, undefined, empty, or meaningless value
• Nil River (Guatemala)
• Nil Nehri The Nile River (in Turkish)
• Jednostka Wojskowa Nil or NIL, a Polish commando unit, part of The Polish Special Forces (Wojska Specjalne)

• Names for the number 0 in English
• Neel (disambiguation)
• Null (disambiguation)
• All pages with titles beginning with Nil