Lorcin [ˈlɔrt͡ɕin] is a village in the administrative district of Gmina Nasielsk, within Nowy Dwór County, Masovian Voivodeship, in east-central Poland. It lies approximately 9 kilometres (6 mi) south-east of Nasielsk, 17 km (11 mi) north-east of Nowy Dwór Mazowiecki, and 37 km (23 mi) north of Warsaw.