Josef Weider (; November 29, 1919 – March 23, 2013) was a Canadian bodybuilder and entrepreneur who co-founded the International Federation of BodyBuilders (IFBB) alongside his brother Ben Weider. He was also the creator of Mr. Olympia, Ms. Olympia, and the Masters Olympia bodybuilding contests. He was the publisher of various bodybuilding and fitness-related magazines, most notably Muscle & Fitness, Flex, Men's Fitness, and Shape, and the manufacturer of a line of fitness equipment and fitness supplements. In 2014, he was inducted into the International Sports Hall of Fame.
https://en.wikipedia.org/wiki/Joe_Weider