International Mathematical Union was created in 1919.
International Mathematical Union ended in 1936.
African Mathematical Union was created in 1976.
Italian Mathematical Union was created in 1922.
International Mathematical Olympiad was created in 1959.
International Association of Mathematical Physics was created in 1976.
International Commission on Mathematical Instruction was created in 1908.
International Triathlon Union was created in 1989.
International Vegetarian Union was created in 1908.
International Skating Union was created in 1892.
International Labor Union was created in 1878.
International Astronomical Union was created in 1919.
International Philatelic Union was created in 1881.