QN

QN or qn may refer to:

• Q_n, one of several robust measures of scale in statistics
• ATCvet code QN Nervous system, a section of the Anatomical Therapeutic Chemical Classification System for veterinary medicinal products
• QN connector, a type of coaxial RF connector
• Queen's Nurse (QN), an honorary title awarded by the Queen's Nursing Institute (QNI) to community nurses
• Queen regnant (Qn.), in the Christian Church, following the name of a Christian saint who was a Queen
• Queer Nation (QN), a United States LGBT social movement
• Quintillion (qn), a large number
• Quotidiano Nazionale, an Italian online newspaper