Jonnik [ˈjɔnnik] is a village in the administrative district of Gmina Stanin, within Łuków County, Lublin Voivodeship, in eastern Poland. It lies approximately 3 kilometres (2 mi) south-east of Stanin, 13 km (8 mi) south-west of Łuków, and 71 km (44 mi) north of the regional capital Lublin.