The International Association of Friends of the Soviet Union was an organization formed on the initiative of the Communist International in 1927, with the purpose of coordinating solidarity efforts with the Soviet Union around the world. It grew out of existing initiatives like Friends of Soviet Russia in the United States, the Association of Friends of the New Russia in Germany, and the Hands Off Russia campaign that had emerged during the early 1920s in Great Britain and elsewhere.
In 1927 the Union of Soviet Socialist Republics celebrated the 10th Anniversary of the Russian Revolution with much fanfare. Supporters of the Soviet Union flocked to Moscow to attend the official Revolution Day festivities slated for November 7. The Communist International decided to make use of this opportunity to bring together representatives of the various national "friendship societies," centralizing their activities in a single international organization to be known as the International Association of Friends of the Soviet Union. An organizing committee for the new association was named, with representatives of the Communist Party of the Soviet Union and the Communist Party of Great Britain playing a leading role.
The founding congress of FSU was held at the House of the Trade Unions in Moscow November 10–12, 1927. 917 delegates from 40 countries assisted the conference. Leading figures in the organization were Clara Zetkin and Henri Barbusse. National sections of FSU was formed in various countries.
The Australian FSU was established in 1930. In the mid-1930s there was an attempt on behalf of the Commonwealth to ban the organization. The organization was later reconstituted as the Australia-Soviet Friendship League.