Trzykosy [tʂɨˈkɔsɨ] is a village in the administrative district of Gmina Koprzywnica, within Sandomierz County, Świętokrzyskie Voivodeship, in south-central Poland. It lies approximately 5 kilometres (3 mi) north-west of Koprzywnica, 17 km (11 mi) south-west of Sandomierz, and 72 km (45 mi) south-east of the regional capital Kielce.