Komazawa Olympic Park (駒沢オリンピック公園) located on land in both Meguro and Setagaya, Tokyo, Japan, is a sports facility that was constructed for the 1964 Summer Olympics.

The park includes an outdoor athletic and soccer venue, the Komazawa Olympic Park Stadium, the Komazawa Gymnasium and multiple additional soccer, baseball, swimming, tennis, jogging and cycling facilities.

Emperor Hirohito played golf there with King George V of the United Kingdom.

It was to be developed into the main venue of the 1940 Summer Olympics, which were cancelled due to the Second Sino-Japanese War.

Redevelopment began from 1962 onwards in preparation for the 1964 Olympics.