| Giełczyn | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Podlaskie |
| Subdivision Type2: | County |
| Subdivision Name2: | Mońki |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Trzcianne |
| Coordinates: | 53.23°N 22.4819°W |
| Pushpin Map: | Poland |
Giełczyn is a village in the administrative district of Gmina Trzcianne, within Mońki County, Podlaskie Voivodeship, in north-eastern Poland.[1]