| Marianów Sierakowski | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Masovian |
| Subdivision Type2: | County |
| Subdivision Name2: | Gostynin |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Gostynin |
| Coordinates: | 52.3572°N 19.4019°W |
| Pushpin Map: | Poland |
| Pushpin Label Position: | bottom |
| Population Total: | 130 |
Marianów Sierakowski is a village in the administrative district of Gmina Gostynin, within Gostynin County, Masovian Voivodeship, in east-central Poland.[1] It lies approximately 8km (05miles) south-west of Gostynin and 1100NaN0 west of Warsaw.