QN may refer to:
- Queer Nation, a United States LGBT social movement
- ATCvet code QN Nervous system, a section of the Anatomical Therapeutic Chemical Classification System for veterinary medicinal products
- Queen's Nurse, a prestigious honorary title awarded by the Queen's Nursing Institute (QNI) to community nurses, in recognition of excellence in patient-focused care
- QN connector, a type of coaxial RF connector
- Quadrillion
Qn may refer to:
- Queen, in the Christian Church; when the term Qn. follows the name of a Christian saint it denotes that the saint was a Queen
- Qn, one of several robust measures of scale in statistics