Bizeljsko Castle (Slovene: grad Bizeljsko; grad Orešje, German: Schloss Wisell) is a castle in Bizeljska Vas, a village in the Municipality of Brežice, in southeastern Slovenia.

It consists of a residential part that forms the centre of the complex and includes a Baroque chapel, as well as an outer part that served a defensive purpose.

[1] The castle was mentioned for the first time in written sources in 1404.

It has belonged to the families Tattenbach and Windisch-Graetz, among others.

The oldest parts of the now-visible structure date from the 14th century, and the castle has been rebuilt and expanded gradually over the centuries.