Joseph Louis Anne Marie Charles Avenol was a French diplomat. He served as the second Secretary General of the League of Nations from 3 July 1933 to 31 August 1940. He was preceded by Sir Eric Drummond of the United Kingdom, who was general secretary between 1920 and 1933. He was succeeded by the Irish diplomat Seán Lester, who was general secretary between 1940 and 1946, when the League dissolved.

James Eric Drummond, 7th Earl of Perth,, was a British politician and diplomat who was the first Secretary-General of the League of Nations (1920–1933).