Athletics at the 1968 Summer Olympics – Men's 100 metres
The men's 100 metres sprint event at the 1968 Olympic Games took place at Estadio Olímpico Universitario in Mexico City, Mexico, on October 13 and 14. Sixty-five athletes from 42 nations took part. Each nation was limited to 3 runners by rules in place since the 1930 Olympic Congress. The final was won by American Jim Hines, the second consecutive time the event was won by an American (and the nation's 12th title in the event overall). Jamaica won its first medal in the event since 1952. 