Rudnia

Rudnia may refer to the following places:

Poland

 * Rudnia, Gmina Czarna Białostocka in Podlaskie Voivodeship, north-east Poland
 * Rudnia, Gmina Michałowo in Podlaskie Voivodeship, north-east Poland
 * Rudnia, Warmian-Masurian Voivodeship, north Poland
 * Rudnia River, a tributary in Poland of the Narew

Lithuania

 * Rudnia (Kaniava), a village in Kaniava eldership, Varėna district municipality, Alytus County

Ukraine

 * Verkhnia Rudnia, Zhytomyr Oblast