Olszyny Podlaskie Voivodeship
 Olszyny [ɔlˈʂɨnɨ] is a village in the administrative district of Gmina Piątnica within Łomża County Podlaskie Voivodeship in north-eastern Poland. It lies approximately 11 kilometres (7 mi) east of Piątnica 13 km (8 mi) north-east of Łomża and 63 km (39 mi) west of the regional capital Białystok.