7th Heavy Anti-Aircraft Regiment, Royal Artillery (7th HAA Rgt) was an air defence unit of the British Army that served in the Siege of Malta during World War II. It fired the first British shots in the Mediterranean Theatre in the war, and provided the basis on which the heavy anti-aircraft defences of Malta were built. Late in the war it returned to defend the UK against V-1 flying bombs, and continued in the postwar army until 1954.