Results for Japan in 100 metres Backstroke, Men

Olympic and Intercalated results only.

Games	Athlete/Team	Placement
1924 Summer Olympics	Takahiro Saito	6
	Tsunenobu Ishida	15
1928 Summer Olympics	Toshio Irie	4
	Shourai Kimura	4 h5 r1/3
1932 Summer Olympics	Masaji Kiyokawa	1	Gold
	Toshio Irie	2	Silver
	Kentaro Kawatsu	3	Bronze
1936 Summer Olympics	Masaji Kiyokawa	3	Bronze
	Kiichi Yoshida	5
	Yasuhiko Kojima	6
1952 Summer Olympics	Yasumasu Nishino	19
	Norihiko Kurahashi	=23
1956 Summer Olympics	Kazuo Tomita	=9
	Keiji Hase	=9
	Hideo Ninomiya	21
1960 Summer Olympics	Kazuo Tomita	=12
	Kazuo Watanabe	30
1968 Summer Olympics	Kishio Tanaka	=17
1972 Summer Olympics	Tadashi Honda	8
1976 Summer Olympics	Tadashi Honda	28
1984 Summer Olympics	Daichi Suzuki	=11
1988 Summer Olympics	Daichi Suzuki	1	Gold
	Shigemori Maruyama	12
1992 Summer Olympics	Hajime Itoi	12
	Keita Soraoka	27
1996 Summer Olympics	Keitaro Konnai	9
	Hajime Itoi	11
2004 Summer Olympics	Tomomi Morita	3	Bronze
2008 Summer Olympics	Junichi Miyashita	8
	Tomomi Morita	10
2012 Summer Olympics	Ryosuke Irie	3	Bronze
2016 Summer Olympics	Ryosuke Irie	7
	Junya Hasegawa	19
2020 Summer Olympics	Ryosuke Irie	=9
2024 Summer Olympics	Riku Matsuyama	31