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News Release

2026/01/22

Prof. KAWARABAYASHI Ken-ichi Selected as a 2025 ACM Fellow

Professor KAWARABAYASHI Ken-ichi (Principles of Informatics Research Division) of the National Institute of Informatics (NII, Director-General: KUROHASHI Sadao, Chiyoda-ku, Tokyo) has been selected as a 2025 ACM Fellow by the Association for Computing Machinery (ACM), one of the world's largest academic societies in the field of computer science. The ACM Fellows program honors ACM members who have made outstanding contributions to this field.

Founded in New York on September 15th, 1947, ACM is the world's largest and oldest educational and scientific society in the field of computing. It is well known as the association that gives out the ACM A.M. Turing Award, which is recognized as the most prestigious award in the field of computer science.
ACM selects Fellows every year from the top 1% of the more than 110,000 association members worldwide who are computing scientists, educators, etc., for their outstanding accomplishments in computing and information technology.
On January 22nd (January 21st US local time), ACM announced the recipients selected for the title of Fellow for 2025, and Professor KAWARABAYASHI Ken-ichi of NII was selected for this title. He will be formally recognized during an awards banquet on June 13th (US local time) in San Francisco, USA.

Awardee

Name :　KAWARABAYASHI Ken-ichi
Position：Professor, Principles of Informatics Research Division, National Institute of Informatics, and Professor, Department of Information Science (UG), Graduate School of Information Science and Technology, The University of Tokyo (concurrent appointments)

Reason for Selection as a Fellow

For his contributions to graph theory, graph algorithms, and their applications

Comment from Prof. KAWARABAYASHI

I am very honored to have been selected as an ACM Fellow. I don't believe that I could have been selected for this honor without the researchers I have worked with up until now (including postdocs and graduate students). I am also humbled to be counted as a member of the ACM Fellows, which is a select group that includes many respected researchers in the field of computer science.
I am the tenth ACM Fellow who is from Japan, and I am extremely happy to be selected for this honor following fellow NII members Professor KITSUREGAWA Masaru and Professor YONEZAWA Akinori.