The middleweight class was a judo event held as part of the Judo at the 1964 Summer Olympics programme.
The weight class was the second-lightest contested, and allowed judokas of up to eighty kilograms.
The competition was held on Wednesday, October 21, 1964.
[1] Twenty-five judokas from twenty nations competed.
The twenty-five competitors were divided into seven pools of three and one group of four.