Joanin [jɔˈanin] is a village in the administrative district of Gmina Rudnik, within Krasnystaw County, Lublin Voivodeship, in eastern Poland. It lies approximately 3 kilometres (2 mi) north-west of Rudnik, 19 km (12 mi) south-west of Krasnystaw, and 47 km (29 mi) south-east of the regional capital Lublin.