The Grampian 23 is a recreational keelboat built by Grampian Marine in Canada between 1971 and 1976 with 450 boats completed.
The fibreglass hull has a transom-hung rudder controlled by a tiller. With a swing keel it has a draft of with the swing keel extended and with it retracted. A fixed fin keel was optional.
It has five berths, with a double "V"-berth, a dinette table in the main cabin that converts to a double berth and an aft berth on the port side, under the cockpit. The galley is on the port side amidships, and is equipped with a two-burner stove and a sink. The head is just aft of the bow cabin on the starboard side. Cabin headroom is . The cabin has a poptop. The spacious interior makes the cockpit is relatively small for the boat's size.
It has a masthead sloop rig. For sailing downwind the design may be equipped with a symmetrical spinnaker.
It has a hull speed of .