Sir Arthur Cecil Tyrrell Beck (3 December 1876 – 22 March 1932) was a British Liberal Party politician.

He was born in Bloemfontein South Africa and was the son of Arthur William Beck and Annie Tyrrell.

He continued in this post until June 1917, when he was appointed one of the Parliamentary Secretaries and Controller of Finance to the Ministry of National Service.

He was one of the minority of Liberal MPs who agreed to continue serving in the Coalition Government when David Lloyd George took over as prime minister.

When the 1918 General Election came along, as an office holder in the Coalition Government, Beck received the endorsement of Lloyd George and had no Unionist opponent, making his re-election easy; The National Service Ministry was abolished in December 1919.

Beck intended to contest a London constituency rather than defend his seat at the 1922 General Election,[8] but he did not stand for parliament again.