Siąszyce Trzecie [ɕɔ̃ˈʂɨt͡sɛ ˈtʂɛt͡ɕɛ] is a village in the administrative district of Gmina Rychwał, within Konin County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 5 kilometres (3 mi) south-east of Rychwał, 21 km (13 mi) south of Konin, and 97 km (60 mi) south-east of the regional capital Poznań.