Łubna-Jarosłaj [ˈwubna jaˈrɔswai̯] is a village in the administrative district of Gmina Błaszki, within Sieradz County, Łódź Voivodeship, in central Poland. It lies approximately 9 kilometres (6 mi) south-east of Błaszki, 17 km (11 mi) west of Sieradz, and 70 km (43 mi) west of the regional capital Łódź.