Saori Oshima (大島沙緒里, born 14 November 1994), née Saori Adachi, is a Japanese mixed martial artist. She currently competes in the atomweight division of Jewels. She is the current Jewels atomweight champion and the current DEEP Microweight champion. As of January 3, 2021, Oshima is ranked as the fourth best atomweight in the world by Fight Matrix and third best by Sherdog.