| Główczyn | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Masovian |
| Subdivision Type2: | County |
| Subdivision Name2: | Grójec |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Mogielnica |
| Pushpin Map: | Poland |
| Coordinates: | 51.7333°N 64°W |
Główczyn is a village in the administrative district of Gmina Mogielnica, within Grójec County, Masovian Voivodeship, in east-central Poland.[1] It lies approximately 5km (03miles) north of Mogielnica, 180NaN0 south-west of Grójec, and 570NaN0 south of Warsaw.