Null

Null may refer to:

Science, technology, and mathematics

Null (SQL) (or NULL), a special marker and keyword in SQL indicating that a data value does not exist, is not known, or is missing.
Null character, the zero-valued ASCII character, also designated by NUL, often used as a terminator, separator or filler. This symbol has no visual representation.
Null device, a virtual file that discards data written to it, on Unix systems /dev/null
Null pointer or reference (sometimes written NULL, nil, or None), an object pointer (or reference) not currently set to point (or refer) to a valid object

The Null Corporation, an imprint of the band Nine Inch Nails
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
Null (The Legend of Zelda), the main antagonist of The Legend of Zelda: Echoes of Wisdom
Null, a mysterious character from Baldi's Basics.

Ashley Null (born 1960s), American Anglican theologian and bishop
Christopher Null (born 1971), American writer and film critic
Cecil Null (1927–2001), American songwriter
Eduard van der Nüll (1812–1868), Austrian architect
Gary Null (born 1945), American radio host and author of works about alternative medicine
Jack Null (1924–2003), American college basketball coach
Keith Null (born 1985), American football player
Luke Null (born 1990), American actor and comedian