The 4th Destroyer Squadron was a naval unit of the Royal Navy from 1951 to 1959.

After World War II, the British Navy reverted to its previous layout and command structure in 1950 the 4th Destroyer Flotilla of the Home Fleet was disbanded [1] and succeeded by the 4th Destroyer Squadron.

These geographic commands usually comprised fleets, squadrons, flotillas, and single ships.

In 1954, major re-structuring of the composition of the navy was undertaken, leading to downsizing and warships being rotated between the various fleets and stations.

Note: Command structure organizational changes took place within Royal Navy post war period the term Flotilla was previously applied to a tactical unit until 1951 which led to the creation of three specific Flag Officers, Flotillas responsible for the Eastern, Home and Mediterranean fleets the existing destroyer flotillas were re-organized now as administrative squadrons.