George Sydenham Clarke, 1st Baron Sydenham of Combe GCSI GCIE GCMG GBE was a British colonial administrator and British Army officer.
After being Governor of Victoria (Australia), he was a member of the committee that issued the Esher Report. The biographer of the Committee's chairman describes Clarke as "...an insensitive, clumsy, uncouth and infinitely boring man..."[1] He was the first Secretary of the Committee of Imperial Defence.