Rgn

RGN or Rgn may refer to:


 * RGN, a human gene which codes for the protein regucalcin
 * RGN hand grenade, a Soviet weapon
 * Registered General Nurse, in the United Kingdom
 * rgn, ISO 639-3 language code for the Romagnol language
 * RGN, IATA code for Yangon International Airport in Myanmar