Results for Japan in Lightweight, Men

Olympic and Intercalated results only.

Games	Athlete/Team	Placement
1956 Summer Olympics	Kenji Onuma	4
1960 Summer Olympics	Hiroshi Yamazaki	AC
	Kenji Onuma	DNF
1964 Summer Olympics	Hiroshi Yamazaki	6
1968 Summer Olympics	Nobuyuki Hatta	4
	Takeo Kimura	7
1972 Summer Olympics	Masao Kato	8
	Yusaku Ono	10
1976 Summer Olympics	Yatsuo Shimaya	5
	Yusaku Ono	AC
1984 Summer Olympics	Choji Taira	5
	Yasushige Sasaki	6
1988 Summer Olympics	Choji Taira	9
	Yasushige Sasaki	DNF
1992 Summer Olympics	Noriaki Horikoshi	9
1996 Summer Olympics	Noriaki Horikoshi	19
2000 Summer Olympics	Yoshihisa Miyaji	11
2008 Summer Olympics	Yoshito Shintani	8
2020 Summer Olympics	Mitsunori Konnai	7