Ołdaki-Polonia [ɔu̯ˈdaki pɔˈlɔɲa] is a village in the administrative district of Gmina Andrzejewo, within Ostrów Mazowiecka County, Masovian Voivodeship, in east-central Poland. It lies approximately 7 kilometres (4 mi) north-east of Andrzejewo, 27 km (17 mi) east of Ostrów Mazowiecka, and 113 km (70 mi) north-east of Warsaw.