Wietlin Pierwszy [ˈvʲɛtlʲin ˈpʲɛrfʂɨ] is a village in the administrative district of Gmina Laszki, within Jarosław County, Subcarpathian Voivodeship, in south-eastern Poland. It lies approximately 6 kilometres (4 mi) south-west of Laszki, 12 km (7 mi) east of Jarosław, and 60 km (37 mi) east of the regional capital Rzeszów.