Yumiko Abe (born April 4, 1979), better known by her ring name Yumi Ohka, is a Japanese professional wrestler and promoter. Originally trained by the now defunct Jd'Star promotion, Ohka now most often works for OZ Academy and Pro Wrestling WAVE. She is a former two-time WAVE Single Champion, while also being a former OZ Academy Tag Team Champion and WAVE Tag Team Champion. She is the managing director of Zabun Co., Ltd., which owns Pro Wrestling WAVE.