The men's javelin throw was one of four men's throwing events on the Athletics at the 1964 Summer Olympics program in Tokyo.

27 athletes from 17 nations entered, with 2 not starting in the qualification round.

Since only one thrower made the mark the next eleven farthest-throwing athletes also advanced to meet the minimum 12 in the final.

The scores from the qualification round were ignored in the final.

The six best threw an additional three times, keeping the scores from all six throws.