Major Sir Alexander Bannerman, 11th Baronet (16 December 1871 – 10 March 1934) was a pioneer British military aviator. Bannerman was born in Brackley in Northamptonshire and educated at Wellington College and subsequently at the Royal Military Academy, Woolwich. He succeeded to the title of 11th Baronet Bannerman, of Elsick in Kincardineshire, on the death of his father the 10th Baronet on 2 December 1901. He had been a balloonist, so had little knowledge of aeroplanes and he is not reckoned as a successful commander of the Air Battalion.