| Medal record | ||
|---|---|---|
| Men's athletics | ||
Representing  Japan
| ||
| Asian Championships | ||
 |
1983 Kuwait City | Javelin throw |
 |
1985 Jakarta | Javelin throw |
Kazuhiro Mizoguchi (溝口 和洋, Mizoguchi Kazuhiro, born March 18, 1962 in Shirahama, Wakayama, Japan) is a Japanese former javelin thrower. He set the world best year performance in 1989, throwing 87.60 metres at a meet in San Jose, California, United States on May 27, 1989. Initially, it was announced as a new world record of 87m86, 20cm higher than the previous world record, but the measurer re-measured it with a plastic tape measure and announced it as 87m60.