The Château de Fontaine is a chateau in the municipality of Onhaye, Wallonia in the Belgian province of Namur.

[1] The chateau lies to the south of the village of Anthée in a valley surrounded by woods.

The chateau replaced a medieval castle, of which there are remains in the north east corner.

It was the seat of the lordship of Fontaine, which included Anthée, Morville and Miavoye, spanning the counties of Namur and Agimont in the Prince-Bishopric of Liège.

[2] The chateau was given a uniform appearance, with the towers raised and the present windows and other decorations added.