"Faulknor" participated in the Norwegian Campaign of April–June, screening the ships of the Home Fleet early in the campaign. After the Second Battle of Narvik on 12 April, Captain Antony De Salis, Captain (D) of the 8th DF and commander of "Faulknor", was appointed the Senior Destroyer Officer for the Narvik area with authority over all the destroyers in the area. He tasked them to patrol the Ofotfjord and evaluate the German defences while preventing any submarines from entering. A landing party from "Faulknor" went ashore on 16 April to inspect the wreck of the beached and search for any useful documents and assess her condition. They found nothing and one man was killed by a sniper. The following day, "Faulknor" and the destroyer bombarded the German ship and set her afire. During this time, the ship was attacked by German aircraft on multiple occasions to little effect. On 25 April, she helped to land part of the 2nd Battalion, the South Wales Borderers to Bogen and Lenvik. Later she bombarded German positions in support of the Allied advance on Narvik. On 4 May, "Faulknor" rescued 52 survivors from the Polish destroyer , which had been sunk by German bombers, and recovered the bodies of 60 more crewmen. The next day, the ship ran aground while bombarding German defences in the Rombaksfjord, but was only lightly damaged. On the voyage home for repairs, she escorted a convoy of empty troopships. "Faulknor" arrived at Scapa Flow on 9 May and sailed for Grimsby for repairs.