Międzyrzecz (Latin: Meserici, German: Meseritz) is a town in western Poland, on the Obra and Paklica river, with 18,310 inhabitants (June 30, 2017). The capital of Gmina Międzyrzecz and Międzyrzecz County. Since the Local Government Reorganization Act of 1998, it has been situated in Lubusz Voivodeship. From 1975–1998 Międzyrzecz was part of Gorzów Voivodeship. The town limits cover 10.26km2.
