Himawari Unagi (うなぎひまわり, Unagi Himawari), better known by her ring name Unagi Sayaka (ウナギ・サヤカ), is a Japanese professional wrestler currently signed to World Wonder Ring Stardom and briefly working as a freelancer. She is best known for her time with Stardom, where she is a former Artist of Stardom Champion and Future of Stardom Champion.