Émile Arnaud (1864–1921) was a French lawyer, notary, and writer noted for his anti-war rhetoric and for coining the term "pacifism".
Arnaud founded the "Ligue Internationale de la Paix et de la Liberté" (International League for Peace and Freedom) in 1861 and was elected its first president.
In 1901 he codified his beliefs into a treatise entitled the Code de la Paix, outlining and defining the goals, political positions and methodology of the Peace movement in general.
He advocated humanism, charity and tolerance, non-violent conflict resolution and reaching mutually beneficial political solutions through establishing consensus.
Emile was a speaker at the second Universal Peace Conference which was preceded by a service at St Paul's Cathedral.