| Mostowlany | |
| Settlement Type: | Village |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Podlaskie |
| Subdivision Type2: | County |
| Subdivision Name2: | Białystok |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Gródek |
| Pushpin Map: | Poland |
| Pushpin Label Position: | left |
| Coordinates: | 53.0678°N 23.8786°W |
Mostowlany (; lt|Mastaulėnai) is a village in the administrative district of Gmina Gródek, within Białystok County, Podlaskie Voivodeship, in north-eastern Poland, close to the border with Belarus.[1] It lies approximately 16km (10miles) east of Gródek and 490NaN0 east of the regional capital, Białystok.