(born on September 5, 1978, in Katsushika, Tokyo, Japan) is a Japanese volleyball player. She plays a V-Premier League team Takefuji Bamboo.
She entered Ito Yokado Prior in April 1997, after graduating from Kyoei High School.Kumakura played the World Youth Women's Volleyball Championship in 1995 as a Japanese representative (with Yoshie Takeshita, Hiromi Suzuki, Miyuki Mori, and Makiko Horai). Her team won the championship.