3N

3N or 3-N may refer to:


 * 3rd parallel north latitude
 * Air Urga's IATA code
 * F6F-3N, a model of Grumman F6F Hellcat
 * F7F-3N, a model of Grumman F7F Tigercat
 * P-3N, a model of Lockheed P-3 Orion
 * 8A-3N, a model if Northrop A-17
 * Routine 3N Incidents, see Incident (Scientology)

Film

 * No Nut November, a 2008 South African film