Kento Masaki (正木 健人, Masaki Kento, born 9 August 1987) is a Japanese Paralympic judoka in Super-Heavyweight. In 2012 he became Paralympic champion in the +100 kg by beating Song Wang (China) in the final. The 2016 Summer Paralympics in Rio is his second Games. In the +100 kg, he won his second medal in the form of a bronze. That occurred after he had suffered his first-ever defeat in a Paralympic match in the semi-final to (Uzbekistan) who went on to win the gold medal, and Masaki ultimately won the bronze-medal match.