During the Norwegian Campaign, "Diana" escorted the aircraft carrier as she returned to Scapa Flow on 25 April to replenish her aircraft. On 1 May, she screened the light cruisers and of the 18th Cruiser Squadron as they covered the evacuations from Åndalsnes and the ship transported the Norwegian Commander-in-chief Major General Otto Ruge from Molde to Tromsø. The ship escorted the carriers and "Furious" as the latter flew off RAF Gloster Gladiators fighters to Bardufoss airfield on 21 May. Ten days later "Diana" escorted the carriers and "Furious" during Operation Alphabet, the Allied withdrawal from Norway.