Ustje is a village in the Vipava Valley south of Ajdovščina in the traditional Inner Carniola region of Slovenia. It is now generally regarded as part of the Slovenian Littoral.

Mass graves in Slovenia were created in Slovenia as the result of extrajudicial killings during and after the Second World War. These clandestine mass graves are also known as "concealed mass graves" or "silenced mass graves" because their existence was concealed under the communist regime from 1945 to 1990.