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Yukihiro Matsumoto Edit Profile


engineer , programmer , scientist , computer scientist

Yukihiro Matsumoto, Japanese computer scientist, free software programmer. Achievements include being the cheif designer of the Ruby programming language. Recipient Japan Innovators award, Nikkei BP, 2009.


Matsumoto, Yukihiro was born on April 14, 1965 in Tottori Prefecture, Japan.


He graduated with an information science degree from University of Tsukuba, where he was a member of Ikuo Nakata's research lab on programming languages and compilers.


His demeanor has brought about a motto in the Ruby community: "Matz is nice and so we are nice," commonly abbreviated as MINASWAN. As of 2011, Matsumoto is the Chief Architect of Ruby at Heroku, an online cloud platform-as-a-service in San Francisco. He is a fellow of Rakuten Institute of Technology, a research and development organisation in Rakuten Inc. He was appointed to the role of technical advisor for VASILY, Inc. starting in June 2014.

Born in Osaka Prefecture, Japan, he was raised in Tottori Prefecture from the age of four. According to an interview conducted by Japan Inc., he was a self-taught programmer until the end of high school.


  • Matsumoto received the 2011 Award for the Advancement of Free Software from the Free Software Foundation (FSF) at the 2012 LibrePlanet conference at the University of Massachusetts Boston in Boston.



Married; 4 children.