Sir William Randal Cremer (18 March 1828 – 22 July 1908) usually known by his middle name "Randal", was an English Liberal Member of Parliament and pacifist.
Cremer was elected as the Secretary of the International Workingmen's Association in 1865, but resigned two years later.
He was Liberal Member of Parliament (MP) for Haggerston in the Shoreditch district of Hackney from 1885 to 1895, and from 1900 until his death.
Cremer won the Nobel Peace Prize, the first to do so solo, in 1903, mainly for his work in international arbitration, and particularly the 1897 Anglo-American arbitration treaty. He co-founded the Inter-Parliamentary Union and the International Arbitration League.
He also won the French Légion d'honneur, the Norwegian Knighthood of Saint Olaf and was knighted in 1907.
Randal Cremer Primary School, in Haggerston, is named in his honour.