| Wieczfnia Kościelna | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Masovian |
| Subdivision Type2: | County |
| Subdivision Name2: | Mława |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Wieczfnia Kościelna |
| Coordinates: | 53.2°N 49°W |
| Pushpin Map: | Poland |
| Pushpin Label Position: | bottom |
Wieczfnia Kościelna is a village in Mława County, Masovian Voivodeship, in east-central Poland. It is the seat of the gmina (administrative district) called Gmina Wieczfnia Kościelna.[1] It lies approximately 13km (08miles) north-east of Mława and 1150NaN0 north of Warsaw.