Kolby Kås is a village in Samsø Municipality, in the region of Central Denmark, Denmark. Kolby Kås lies at 9 m above sea level. The nearest city is Horsens, 43 km to the west. Among the landmarks around are Ilse Made kilde (3.8 km), Vesborg (3.5 km) and Brattingsborg Castle (5.1 km). Among the natural features are Dyret (5.2 km).