A faucet spout fixture provides for spout mounting and removal from above a supporting surface such as a sink deck, without disconnection of the water supply conduits beneath the sink deck. The fixture includes a faucet spout which has a water passage and a water discharge in communication with the passage. There is a water inlet in the spout which communicates with the passage. A water supply assembly is located beneath the supporting surface and there is a spout waterway adjustably connected to the water supply assembly, which spout waterway extends into the spout water inlet. There is a clamp member adjustably mounted on the spout waterway to be positioned against and on top of the supporting surface sink deck. A spout fastener extends through an opening in the clamp member and is held in position therein by a portion of the spout waterway. The spout fastener adjustably cooperates with a threaded bore on the spout to removably fasten the spout against and on top of the supporting surface.