| Kosemin | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Masovian |
| Subdivision Type2: | County |
| Subdivision Name2: | Sierpc |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Zawidz |
| Coordinates: | 52.8625°N 19.8911°W |
| Pushpin Map: | Poland |
| Pushpin Label Position: | bottom |
| Population Total: | 290 |
Kosemin is a village in the administrative district of Gmina Zawidz, within Sierpc County, Masovian Voivodeship, in east-central Poland.[1] It lies approximately 6km (04miles) north of Zawidz, 160NaN0 east of Sierpc, and 1040NaN0 north-west of Warsaw.