Mielesznica [mjɛlɛʂˈnit͡sa] is a village in the administrative district of Gmina Cybinka, within Słubice County, Lubusz Voivodeship, in western Poland, close to the German border. It lies approximately 9 kilometres (6 mi) south-west of Cybinka, 28 km (17 mi) south-east of Słubice, 56 km (35 mi) north-west of Zielona Góra, and 75 km (47 mi) south-west of Gorzów Wielkopolski.