Rina Kawaguchi (川口莉奈, born November 24) is a Japanese voice actress from Saitama Prefecture, Japan, affiliated with Aoni Production. In 2021 she was cast as Luca Ikaruga in The Idolmaster Shiny Colors, and that same year she played Reginleif in the web anime Record of Ragnarok, her first named role in animation.
She later voiced Quan in Kizuna no Allele, Ai Kamiyo in Dark Gathering, Nico Wakatsuki in Witch Watch and Elle Rokudō in Himitsu no AiPri. In 2025 Nico Wakatsuki became her first female lead role in a television anime. In anime music and related projects, she performs "Tsumi to Batsu", the ED of "Needy Girl Overdose". She was also announced for the original unit Karamazov in the TV anime NEEDY GIRL OVERDOSE, as well as for the 2027 TV anime 尚善 and the 2027 TV anime adaptation 7人の眠り姫.
