The MSJ Geometry Prize was established in 1987. It was made possible by the donations of many mathematicians working in geometry. The prize is awarded in recognition of results of particular significance, high quality research over a sustained period of time, or books which have been particularly influential. It encompasses geometry in a wide sense, including differential geometry, topology, and algebraic geometry. It may be awarded to groups of collaborators as well as individuals. On the basis of the above criteria, the Geometry Prize Committee considers suitable candidates and awards at most two prizes per year. In addition to the prize money, each awardee receives an aluminum model of the pseudo-sphere. Donations to the prize fund are welcome. Please contact a member of the Mathematical Society of Japan for details.

Year	Recipients
1987	Akio Kawauchi
	Shoshichi Kobayashi
1988	Hirotaka Fujimoto
1989	Kenji Fukaya
	Yoshio Muto
1990	Akito Futaki
1991	Masaru Takeuchi
	Takashi Tsuboi
1992	Akira Fujiki
	Norihito Koiso
1993	Tomoyoshi Yoshida
1994	Ryoichi Kobayashi
	Tadashi Nagano
1995	Masaaki Umehara and Kotaro Yamada
1996	Hideki Omori
1997	Shigetoshi Bando
	Hiraku Nakajima
1998	Masahiko Kanai
	Tomotada Ohtsuki
1999	Kaoru Ono
	Takao Yamaguchi
2000	Sadayoshi Kojima
	Takeo Ohsawa
2001	Reiko Miyaoka
2002	Kazuyoshi Kiyohara
	Hajime Tsuji
2003	Kengo Hirachi
	Shigenori Matsumoto
2004	Seiichi Kamada
	Shin Nayatani
2005	Koji Fujiwara
	Ryushi Goto
2006	Toshiki Mabuchi
	Takashi Shioya
2007	Shigeyuki Morita
	Ken-Ichi Yoshikawa
2008	Kazuo Habiro
2009	Ko Honda
	Yoshikata Kida
2010	Kazuo Akutagawa
	Nobuhiro Honda
2011	Shin-ichi Ohta
	Kyoji Saito
2012	Ken'ichi Ohshika
	Yukinobu Toda
2013	Toshitake Kohno
	Katsutoshi Yamanoi
2014	Masatake Kuranishi
2015	Hiroshi Iritani
	Osamu Saeki
2016	Teruhiko Soma
	Shigeharu Takayama
2017	Osamu Kobayashi
	Makoto Sakuma
2018	Yuji Odaka
	Shouhei Honda
2019	Kei Irie
	Masaki Tsukamoto
2020	Mikiya Masuda
2021	Nariya Kawazumi and Yusuke Kuno
	Jun Murakami
2022	Hiroshi Iriyeh and Masataka Shibata
	Tatsuki Kuwagaki
2023	Kento Fujita
2024	Hokuto Konno
	Shinobu Hosono

The primary purpose of the Geometry Prize is to reward each year a mathematician who has published an outstanding paper, or who through his or her career has contributed to the advancement of geometry over a sustained period of time in various ways, including achievements related to the guidance of students. There is no age limit for award winners. Geometry will be interpreted in a wide sense, as outstanding results are being achieved beyond traditional boundaries, for example in areas related to topology, nonlinear partial differential equations in global analysis, and areas between mathematical physics and differential geometry.

The Iyanaga Prize is awarded for important work by mathematicians who are at most 40 years old, and who are expected to make further significant contributions in the future. At the same time, it is essential to recognize those whose contributions accumulate in a steady manner. By establishing the Geometry Prize it is our hope to supplement the Iyanaga Prize to honor those who contribute to the field of geometry in other ways.

The funds for this prize will come from various sources, including initial donations by a few volunteers, and further donations to the prize fund will be welcome. The Board of Trustees, representing diverse fields, will determine winners of the prize. The American Mathematical Society has various prizes as well as scholarships, and it is our hope that this prize will play a similar role in Japan. It is our pleasure that many have already unofficially supported this idea.