Giełczyn

Giełczyn may refer to:
 * Giełczyn, Masovian Voivodeship (east-central Poland)
 * Giełczyn, Łomża County in Podlaskie Voivodeship (north-east Poland)
 * Giełczyn, Mońki County in Podlaskie Voivodeship (north-east Poland)