- Name: Ryohei Kakizawa
- Sex: Male
- Birthday: March 7, 1985
- Birthplace: Yokohama-shi, Kanagawa, Japan
- April, 2003--March, 2007: Undergraduate program, Department of Mathematics, Keio University
- April, 2007--March, 2009: Master's program, Graduate School of Mathematical Sciences, The University of Tokyo
- April, 2009--March, 2012: Doctoral program, Graduate School of Mathematical Sciences, The University of Tokyo
- March, 2007: Bachelor of Science in Mathematics, Keio University
- March, 2009: Master of Science in Mathematical Sciences, The University of Tokyo
- March, 2012: Doctor of Philosophy in Mathematical Sciences, The University of Tokyo
- March, 2009: 中学校教諭専修免許状 (数学) (東京都 平20中専 第10356号)
- March, 2009: 高等学校教諭専修免許状 (数学) (東京都 平20高専 第10412号)
- April, 2012--Present: Associate Professor, Department of Mathematics Education, Shimane University