Ayaka Hamasaki (浜崎 朱加, Hamasaki Ayaka, born on March 31, 1982) is a Japanese female kickboxer and mixed martial artist. She has fought in MMA promotions Shooto and Jewels in Japan and Invicta FC in the United States. Hamasaki won the first Jewels 115 lb (52 kg) Queen tournament to become the first lightweight champion of the promotion. Hamasaki vacated her title due to injuries on August 31, 2013. She is a former Invicta FC 105 lb (48 kg) atomweight champion. Hamasaki is the first Asian to win a North American premier MMA promotion title. Fight Matrix and MMARising.com list her as the number 1 atomweight fighter in the world. and one of the top 10 pound for pound female fighters in the world.