Places
- Nix, Alabama, an unincorporated community, United States
- Nix, Texas, a ghost town in southwestern Lampasas County, Texas, United States
- Nix (moon), a moon of Pluto
In science and technology
Other uses
- Nix Federal Building, a historic building in Philadelphia, Pennsylvania
- Nix Professional Building, a hospital in San Antonio, Texas
- Permethrin, branded as Nix in North America, an anti-lice drug
- The Nix, a 2016 novel by Nathan Hill
- Neck (water spirit) or nix, an aquatic being in Germanic folklore
- Nix (surname), listing people with the surname
- "Nix", a song by Golden Boy with Miss Kittin from Or