Louis Cyr (French pronunciation: ​[lwi siʁ]; born Cyprien-Noé Cyr, 11 October 1863 – 10 November 1912) was a famous French Canadian strongman with a career spanning the late 19th and early 20th centuries. His recorded feats, including lifting 500 pounds (227 kg) with one finger and backlifting 4,337 pounds (1,967 kg), show Cyr to be, according to former International Federation of BodyBuilding & Fitness chairman Ben Weider, the strongest man ever to have lived.