6th Anti-Aircraft Brigade (6 AA Bde) was an air defence formation of the British Army formed during World War II. It served in the disastrous Norwegian Campaign in 1940 and then defended East Anglia during the Battle of Britain and The Blitz. It was reorganised to take part in the invasion of Normandy (Operation Overlord), but instead was diverted to defending Southern England against V-1 flying bombs (Operation Diver). It was briefly recreated in the postwar Regular Army.