Sir Horace Rumbold, 9th Baronet

The Right Honourable Sir Horace Rumbold, 9th Bt GCB GCMG KCVO
Sir Horace Rumbold, Bt.
British Ambassador to Germany
In office 1928–1933
Monarch	George V
Preceded by	Sir Ronald Lindsay
Succeeded by	Sir Eric Phipps
Personal details
Born	5 February 1869
Died	24 May 1941 (72)
Nationality	British

Sir Horace George Montagu Rumbold, 9th Baronet, GCB, GCMG, KCVO, PC (5 February 1869 - 24 May 1941) was a British diplomat. A well-travelled diplomat, learning Arabic, Japanese and German, he is best remembered for his role as British Ambassador to Berlin from 1928 to 1933, where he warned of the ambitions of Hitler and Nazi Germany.

Rumbold was the son of Sir Horace Rumbold, 8th Baronet, and was educated at Eton.

Rumbold was an attaché at The Hague (1889–1890) and then served in Cairo, Tehran, Vienna, and Munich between 1900 and 1913. He was then moved to Tokyo (1909–1913) and to Berlin (1913–1914). In 1916 he was appointed ambassador to Berne. After the First World War he was appointed ambassador to Poland in 1919, The following year he became the High Commissioner to Constantinople, during which he signed the Lausanne Treaty on behalf of the British Empire. He was then ambassador to Madrid from 1924 to 1928.