Oud Ade (also: Oud-Ade[3]) is a village in the Dutch province of South Holland.

It is a part of the municipality of Kaag en Braassem, and lies about 7 km east of Leiden.

It developed into the village in the 1960s by the addition of planned neighbourhoods.

The Catholic St Bavo Church was built in 1868.

This South Holland location article is a stub.