97th (The London Scottish) Heavy Anti-Aircraft Regiment, Royal Artillery, was an air defence unit of Britain's Territorial Army (TA) formed during the period of international tension leading up to the outbreak of World War II. It was raised as a duplicate battalion by the famous London Scottish Regiment. The unit defended London during The Blitz and then served in Sicily and Italy, both in the anti-aircraft (AA) and medium artillery roles. The regiment continued in the postwar TA until amalgamated in 1955.