Szlasy-Żalne [ˈʂlasɨ ˈʐalnɛ] is a village in the administrative district of Gmina Krasne, within Przasnysz County, Masovian Voivodeship, in east-central Poland. It lies approximately 10 kilometres (6 mi) south-west of Przasnysz and 81 km (50 mi) north of Warsaw.