Hiroko Otsuka

Hiroko Otsuka (大塚 裕子, Ōtsuka Hiroko, born March 8, 1967, Ehime) is a retired Japanese rhythmic gymnast.

She competed for Japan in the individual rhythmic gymnastics all-around competition at the 1988 Olympic Games in Seoul. She tied for 27th place in the qualification round and didn't advance to the final.