Under zero
Below zero stands for:
- Unter Null (novel) (OT Less Than Zero ), novel by Bret Easton Ellis
- Unter Null (film) (OT Less Than Zero ), film adaptation of the novel from 1987
- Laurel and Hardy: Below Zero , a 1930 Laurel and Hardy film
- Unter Null (music project) , music project and stage name of Erica Dunham (* around 1981), American musician