Yasunari Iwata (岩田 康誠, Iwata Yasunari?) (born March 12, 1974; from Himeji, Hyōgo Prefecture) is a Japanese jockey who rode the winner of the 2006 Melbourne Cup, Delta Blues. It was Iwata's first race outside of Japan.
He was one of the few Japan Racing Association(JRA) Jockey who debuted first in National Association of Racing(NAR). In 2005, Iwata won the 19th World Super Jockey Series as a NAR Jockey. He was transferred to the JRA in 2006.