The Weapon class was a class of destroyers built for the British Royal Navy towards the end of World War II. They were the smaller counterpart to the Battle class and were the first new destroyer designs for the Royal Navy since the Second World War Emergency Programme. 20 ships were planned, of which only 13 were laid down and 7 were launched, but the cessation of hostilities resulted in only 4 being completed for service. Two of the ships had been previously ordered as part of the planned C class, or 15th Emergency flotilla, of 1944, but the orders were changed to the new design.

A ship class is a group of ships of a similar design. This is distinct from a ship type, which might reflect a similarity of tonnage or intended use. For example, USS Carl Vinson is a nuclear aircraft carrier of the Nimitz class.