1991 All-Japan University Baseball Championship Series

The 1991 All-Japan University Baseball Championship Series was played at Meiji-Jingu Stadium from June 8 to June 15. Champions from 24 college leagues participated in the tournament. Tohoku Fukushi University from the Sendai Big-Six Universities Baseball League beat Kansai University from the Kansai Big 6 University Baseball League and won the championship.

Participating Teams

School		League	All-Japan Appearances
	Hokkai Gakuen University	Sapporo Gakusei League	19
	Akita Keiho University	North Tohoku Universities Baseball Federation	1
	Tohoku Fukushi University	Sendai Big-Six Universities Baseball League	9
	Kanto Gakuen University	Kankoshin Student Baseball Federation	1
	International Budo University	Chiba Prefecture University Baseball League	2
	Tokyo Gakugei University	New Tokyo University Baseball League	8
	Kanagawa University	Kanagawa University Baseball League	19
	Tokai University	Tokyo Metropolitan Area University Baseball League	18
	Toyo University	Tohto University Base Ball League	4
	Keio University	Tokyo Big6 Baseball League	6
	Mie University	Tokai University Baseball League	3
	Fukui University of Technology	Hokuriku Universities Baseball League	21
	Aichi Gakuin University	Baseball Association In Aichi	9
	Kansai University	Kansai Big 6 University Baseball League	10
	Osaka University of Commerce	Kansai6 Baseball League	6
	Bukkyo University	Keiji University Baseball League	2
	Nara Sangyo University	Kinki University Baseball League	4
	Osaka University of Health and Sport Sciences	Hanshin University Baseball League	3
	Kindai University, Faculty of Engineering	Hiroshima Big-Six6 Universities Baseball League	17
	Tokuyama University	Chugokutiku University Baseball Federation	4
	Matsuyama University	Shikoku Universities Baseball League	21
	Kyushu International University	Kyushu Big6 Baseball League	11
	Kyushu Kyoritsu University	Fukuoka Big6 Baseball League	2
	Kumamoto Technical University	Kyushu University Baseball League	1

Results

Round	Game	Winner	Score	Loser	Notes
1	Game 1	Kindai University, Faculty of Engineering	8-1	Kanto Gakuen University
	Game 2	Kyushu Kyoritsu University	6-3	Osaka University of Commerce
	Game 3	Fukui University of Technology	7-6	Nara Sangyo University
	Game 4	Kanagawa University	5-4	Matsuyama University
	Game 5	Osaka University of Commerce	4-0	Tokuyama University
	Game 6	International Budo University	6-0	Kumamoto Technical University
	Game 7	Aichi Gakuin University	5-1	Mie University
	Game 8	Bukkyo University	4-2	Tokyo Gakugei University
2	Game 9	Kansai University	11-3	Kindai University, Faculty of Engineering
	Game 10	Kyushu Kyoritsu University	8-7	Hokkai Gakuen University
	Game 11	Tokai University	7-3	Fukui University of Technology
	Game 12	Kanagawa University	2-1	Keio University
	Game 13	Kyushu International University	6-1	Osaka University of Commerce
	Game 14	International Budo University	5-1	Akita Keiho University
	Game 15	Tohoku Fukushi University	5-1	Aichi Gakuin University
	Game 16	Bukkyo University	7-3	Toyo University
3	Game 17	Kansai University	2-1	Kyushu Kyoritsu University
	Game 18	Kanagawa University	15-2	Tokai University
	Game 19	Kyushu International University	8-1	International Budo University
	Game 20	Kanagawa University	4-0	Bukkyo University
4	Game 21	Kansai University	5-3	Kanagawa University
	Game 22	Tohoku Fukushi University	4-0	Kyushu International University
5	Game 23	Tohoku Fukushi University	4-2	Kansai University