Piotrowo-Trojany [pjɔˈtrɔvɔ trɔˈjanɨ] is a village in the administrative district of Gmina Boćki within Bielsk County, which is part of the Podlaskie Voivodeship in north-eastern Poland. It lies approximately 9 kilometres (6 mi) south-west of Boćki, 26 km (16 mi) south-west of Bielsk Podlaski, and 60 km (37 mi) south of the regional capital Białystok.