Nix is a water creature in German and Scandinavian folklore. It may also refer to:
People
- Bern Nix, U.S. jazz guitarist
- Don Nix, U.S. songwriter, composer, arranger, musician, and author
- Dyron Nix (born 1967), former American professional basketball player
- Garth Nix (born 1963), Australian author of young adult fantasy novels
- James R. Nix, director of the Ellen G. White Estate since 2000
- Kirksey Nix, reputedly the leader of the Dixie Mafia
- Laynce Nix (born 1980), U.S. Major League Baseball outfielder
- Robert N. C. Nix, Jr. (1928-2003), U.S. Chief Justice of the Pennsylvania Supreme Court from 1984 to 1996
- Robert N.C. Nix, Sr. (1897–1987), first African American to represent Pennsylvania in the House of Representatives
- Willie Nix (d.1991), Blues drummer active in Memphis, Tennessee in the 1940s and 1950s
- Nix, an evil cult leader portrayed in the movie Lord of Illusions
Other
- Nix (brachiopod), a brachiopod genus
- Nix (moon), a natural satellite of Pluto
- Nix Jeans, a domestic Korean clothing manufacturer and jeans label
- Nix Package Manager, a purely functional package and configuration manager for computer systems
- Norwegian Internet Exchange, the internet exchange point in Oslo, Norway
See also
- Nix Nought Nothing, a story collected by Joseph Jacobs in his English Fairy Tales
- Nix v. Hedden (1893), a case in the United States Supreme Court
- Nix v. Whiteside (1986), a United States Supreme Court decision
- Nyx (mythology), in Greek mythology, the primordial goddess of the night
- NYX (comic book), an American comic book miniseries by Marvel Comics
- NYSE Group (NYX)
- Stevie Nicks (born 1948), American singer and songwriter, best known for her work with Fleetwood Mac
