Lieutenant General Sir Alexander Crawford Simpson Boswell, KCB, CBE, DL (3 August 1928 – 13 November 2021) was a British Army officer. He joined the army as junior officer in the Argyll and Sutherland Highlanders shortly after the Second World War and, following a series of regimental and staff postings, was second-in-command of 1st Battalion the Argyll and Sutherland Highlanders during the Indonesia–Malaysia confrontation. He later commanded the battalion, then 39th Infantry Brigade, before taking command of the 2nd Armoured Division in 1978. He was later the General Officer Commanding in Scotland and Lieutenant Governor of Guernsey before retiring in 1990.