Ryuhei Arita (?? ??, Arita Ryuhei, born 21 March 1989 in Fukuoka) is a Japanese rugby union player who plays as a hooker.In his home country he plays for the Coca-Cola Red Sparks whom he joined in 2011.
He was also named in the first ever Sunwolves squad which will compete in Super Rugby from the 2016 season.
Arita is a Japanese international who debuted against Kazakhstan in 2012, but did not make the squad for the 2015 Rugby World Cup.