Rina Okamoto (Japanese: 岡本 璃奈, Hepburn: Okamoto Rina, born March 17, 1994), better known as Panchan Rina (ぱんちゃん 璃奈, Pan-chan Rina), is a Japanese professional kickboxer. She is the current Knock Out-Black Female Minimumweight Champion. She is also a former Knock Out-Black Female Atomweight Champion and a Rebels-Black Women's 46 kg Champion. After moving from Osaka to Tokyo at the age of 21, Rina discovered kickboxing and began competing at the amateur level in 2017. She made her professional debut in February 2019, and remains undefeated in 13 bouts.