HMS Effingham was a Hawkins-class heavy cruiser of the Royal Navy. She was commissioned at Portsmouth in 1925, having had her construction halted for several years following the end of the First World War in 1918. She was named after Lord Howard of Effingham, one of the leaders of the fleet that defeated the Spanish Armada in 1587. Completed in 1925, the vessel saw action during the Second World War and was escorting a convoy to Norway in 1940 when she ran aground. The crew was evacuated and the cruiser destroyed by a torpedo from an accompanying destroyer.