Mierzwin [ˈmjɛʐvin] is a village in the administrative district of Gmina Imielno, within Jędrzejów County, Świętokrzyskie Voivodeship, in south-central Poland. It lies approximately 5 kilometres (3 mi) south-west of Imielno, 12 km (7 mi) south-east of Jędrzejów, and 40 km (25 mi) south of the regional capital Kielce.