Sarnowo [sarˈnɔvɔ] is a village in the administrative district of Gmina Kuczbork-Osada, within Żuromin County, Masovian Voivodeship, in east-central Poland. It lies approximately 6 kilometres (4 mi) north of Kuczbork-Osada, 13 km (8 mi) north-east of Żuromin, and 121 km (75 mi) north-west of Warsaw.