The Union of Wilno and Radom was a set of acts passed in 1401 in Wilno and confirmed in Radom later the same year. The union ammended the earlier act of the Krewo Union and granted the Grand Duchy of Lithuania vast internal autonomy. Vytautas the Great was instituted as the Grand Duke of Lithuania while his cousin Władysław Jagiełło retained the rights of an overlord.

See also:

• Polish-Lithuanian Union

pl:Unia wileńsko-radomska