Sir Arthur Cecil Tyrrell Beck (1878-1932) was a minor British politician.
He was educated at Haileybury and the University of Cambridge. In 1912 he was appointed one of the Commissioners of the Royal Commission of Inquiry into methods of appointment in the Civil Service. He was made a Lord of the Treasury in the Liberal government of H.H. Asquith in February 1915, then was appointed Vice-Chamberlain of the Household on the formation of the wartime coalition government in May 1915. He continued in this post until June 1917, when he was appointed one of the Parliamentary Secretaries to the Ministry of National Service. This Ministry was abolished in December 1919, and Beck was knighted in 1920.