ZN

ZN or Zn may refer to:

Algebra

 * Zn, a cyclic group
 * $$\mathbb{Z}_n,$$ the ring of integers modulo n in modular arithmetic

Geometry

 * Azimuth, the angle between a reference plane and a point
 * Zenith, the direction pointing directly above a particular location

Science

 * Zinc, symbol Zn, a chemical element
 * Zettanewton (ZN), an SI unit of force
 * Ziehl–Neelsen stain, a bacteriological stain

Other uses

 * Zontanoi Nekroi, a Greek hip hop group
 * Air Bourbon, a French airline (2002–2004;  IATA: ZN)