Riberhus was a royal castle situated on the western outskirts of Ribe, Esbjerg Municipality, Denmark.

On the southern corner of the castle bank stands a bronze statue of Queen Dagmar by Anne Marie Carl-Nielsen.

The name Riberhus is first recorded in 1320 in connection with the håndfæstning Christopher III had to sign in order to become the country's king.

[1] The castle was initially the seat of the king's vassal of Southwestern Jutland, and thus the centre of local government.

During this period, a number of royal castles were built across the country to strengthen the king's power in the regions and guard against attack.

Bricks and other building materials from the castle were later used for the renovation of local churches and other construction projects in the area.

In a number of old Danish folk songs, Riberhus is mentioned as the death place of Queen Dagmar.