Bertram Wagstaff Mills (August 1873 – 16 April 1938) was a British circus owner who ran the Bertram Mills Circus. Originally from Paddington, London, his circus became famous in the UK for its Christmas shows at Olympia in West London. His troupe were the last to perform with live animals on the Drury Lane Theatre stage. This was one of his show posters featuring an India and Bengal tiger act.