Mosaki-Stara Wieś [mɔˈsaki ˈstara ˈvjɛɕ] is a village in the administrative district of Gmina Krasne, within Przasnysz County, Masovian Voivodeship, in east-central Poland. It lies approximately 3 kilometres (2 mi) south-west of Krasne, 14 km (9 mi) south of Przasnysz, and 76 km (47 mi) north of Warsaw.