| Alfonsowo | |
| 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: | Jasieniec |
| Coordinates: | 51.7833°N 78°W |
| Pushpin Map: | Poland |
| Pushpin Label Position: | bottom |
| Population Total: | 40 |
Alfonsowo is a village in the administrative district of Gmina Jasieniec, within Grójec County, Masovian Voivodeship, in east-central Poland.[1] It lies approximately 12km (07miles) south-east of Grójec and 490NaN0 south of Warsaw.