is a female Japanese taekwondo practitioner, born in Daito. She won the silver medal in the women's flyweight (-49 kg) class at the 2010 Asian Taekwondo Championships held in Astana, Kazakhstan.
She competed in the 2012 Summer Olympics, reaching the quarterfinals, where she lost to eventual gold medallist Wu Jingyu.
Kasahara was originally a karateka but converted her specialty to taekwondo in 2007. She currently attends at Daito Bunka University, majoring in English Literature.