Herdla is an island in the municipality of Askøy in Vestland county, Norway.

During the Second World War, all of Herdla was in effect a military base for the German Luftwaffe.

The air base at Herdla was important to defend the west coast of Norway against Allied attacks.

After the war the air traffic control for the Bergen area was placed at Herdla.

In recent years the fortress had been used for training new recruits for the coastal artillery, but the fortress was permanently closed in 2000 as part of major restructuring of the Norwegian Armed Forces, when the Royal Norwegian Coastal Artillery was decommissioned.