| Nowy Secymin | |
| Settlement Type: | Village |
| Total Type: | |
| Coordinates: | 52.3844°N 20.4231°W |
| Pushpin Map: | Poland |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Masovian |
| Subdivision Type2: | County |
| Subdivision Name2: | Nowy Dwór |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Leoncin |
Nowy Secymin (German Deutsch Secymin[1]) is a village in the administrative district of Gmina Leoncin, within Nowy Dwór County, Masovian Voivodeship, in east-central Poland.[2] According to census 2011, it has a population of 129.[3]