Osiecza Pierwsza [ɔˈɕɛt͡ʂa ˈpjɛrfʂa] is a village in the administrative district of Gmina Rzgów, within Konin County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 12 kilometres (7 mi) west of Konin and 85 km (53 mi) east of the regional capital Poznań.