Null may refer to:

Science, technology, and mathematics

Computing

* Null (SQL) (or NULL), a special marker and keyword in SQL indicating that something has no value * Null character, the zero-valued ASCII character, also designated by , often used as a terminator, separator or filler. This symbol has no visual representation *

Null pointer In computing, a null pointer or null reference is a value saved for indicating that the pointer or reference does not refer to a valid object. Programs routinely use null pointers to represent conditions such as the end of a list of unknown lengt ...

or reference (sometimes written NULL, nil, or None), an object pointer (or reference) not currently set to point (or refer) to a valid object

Mathematics

* Null (mathematics), a zero value in several branches of mathematics

Physics

Null (physics) In physics a null is a point in a field where the field quantity is zero as the result of two or more opposing quantities completely cancelling each other. The field may be scalar, vector or tensor in nature. Common situations where nulls arise a ...

, a point in a field where the field quantity is zero *

Null (radio) In radio electronics, a null is a direction in an antenna's radiation pattern where the antenna radiates almost no radio waves, so the far field signal strength is a local minimum. Nulls occur because different parts of an antenna radiate radio ...

, a concept in electromagnetism

Arts and media

*The Null Corporation, an imprint of the band

Nine Inch Nails Nine Inch Nails, commonly abbreviated as NIN and stylized as NIИ, is an American industrial rock band formed in Cleveland in 1988. Singer, songwriter, multi-instrumentalist, and producer Trent Reznor was the only permanent member of the band ...

* ''Null'' (Intronaut EP), 2006 * ''Null'' (Foetus EP), 1995 *Null, an identity of the character Gray Fox in the ''Metal Gear Solid: Portable Ops'' video game *Null, a villain from '' Teenage Mutant Ninja Turtles Adventures''

People with the surname

* Christopher Null (born 1971), American writer and film critic *

Eduard van der Nüll Eduard van der Nüll (9 January 1812 (baptized) – 4 April 1868) was an Austrian architect, who was one of the great masters in the historicist style of Vienna's Ringstrasse. ''Architectural Theory: An Anthology from Vitruvius to 1870'', ...

(1812–1868), Austrian architect * Gary Null (born 1945), American radio host and author on alternative medicine * Keith Null (born 1985), American football player *

Luke Null Lucas Elliot Null (born July 7, 1990) is an American actor, comedian, singer, and musician. Null is best known for his brief tenure as a cast member on the NBC sketch comedy series ''Saturday Night Live ''Saturday Night Live'' (often abbre ...