We are pleased to announce the 2021 SCDJ award winners.SCDJ Award 2021 winner is Prof. Tetsuo KUWABARA (University of Yamanashi).SCDJ Contribution Award 2021 winner is Dr. Hiroshi IKEDA (Tokyo Institute of Technology).SCDJ Award for Young Scientists 2021 winners are Dr. Yoshinori ARISAKA (Tokyo Medical and Dental University) and Dr. Risako ONODERA (Kumamoto University).