Chemistry (styled CHEMISTRY) was a Japanese Pop/R&B duo, composed of Yoshikuni Dōchin (堂珍 嘉邦, born November 17, 1978) and Kaname Kawabata (川畑要) born January 28, 1979. They were the winners of the Asayan audition (similar to the American Idol series) in 2000 organized by Sony Music Entertainment Japan.

Their first single "Pieces of a Dream" was released on March 3, 2001, and was the best selling single that year (over 2 million). Most of their singles have reached #1 on the Oricon charts; all five albums have reached #1 the day they were released. Their #1 streak was broken by the KinKi Kids' album H Album: Hand, scoring them a #2 rank for Fo(u)r.