Constantiaberg is a large, whalebacked mountain that forms part of the mountainous spine of the Cape Peninsula in Table Mountain National Park, Cape Town, South Africa. It lies about 7 km south of Table Mountain, on the southern side of Constantia Nek. The mountain is 927 m high and was probably first climbed in prehistoric times by the Bushmen. It is not known who first ascended the peak in modern times.
Constantiaberg, Devil's Peak and Table Mountain are the highest mountains in the range that stretches from Table Mountain all the way to Cape Point. The range, made up of resistant sandstones of the Table Mountain Group, dominates the southern suburbs of the city on the verge of the Cape Flats. The lower eastern slopes of Constantiaberg are covered by the commercial pine and gum plantations of Tokai forest, and are crisscrossed with hiking trails and gravel roads that are used for harvesting the trees. The forest is popular for walking, running and mountain biking.