Serniawy [sɛrˈɲavɨ] is a village in the administrative district of Gmina Sawin, within Chełm County, Lublin Voivodeship, in eastern Poland. It lies approximately 11 kilometres (7 mi) north-west of Sawin, 24 km (15 mi) north of Chełm, and 57 km (35 mi) east of the regional capital Lublin.