Gęsina [ɡɛ̃ˈɕina] is a village in the administrative district of Gmina Brzeźnio, within Sieradz County, Łódź Voivodeship, in central Poland. It lies approximately 6 kilometres (4 mi) north-west of Brzeźnio, 17 km (11 mi) south-west of Sieradz, and 71 km (44 mi) south-west of the regional capital Łódź.