- 2017, Diplomat of Excellence in recognition of collaboration between University of Tsukuba and West University of Timisoara, and for the contributions of SYNASC
- 2010, Best Paper Award, Japan Society for Software Science and Technology
- 2007, The ICPC Founders Award, ACM
- 2004, Doctor Honoris Causa, West University of Timisoara, Romania
- 1979, Best Paper Award, Information Processing Society of Japan