Reina Kunimitsu is a Japanese voice actress and actress known for her bilingual abilities, having been originally from London and professionally trained at a voice acting school in Tokyo. She has been active in the Japanese entertainment industry for over ten years, working across stage productions, narration, television, film, and voice acting. She is also a first-generation graduate of the Tokyo Anime Voice Acting & eSports College.

Her early work includes the role of Ayumi, a possessed student, in the live-action series Pretty Guardian Sailor Moon. This character is a schoolgirl who is transformed into a youma by the villain Kunzite before being saved by Sailor Moon.

In her career, she has appeared in the Oscar-nominated film Perfect Days. She also played the role of Holly in the Japanese language version of the highly acclaimed drama Fence. In the anime industry, she is known for providing voices in the award-winning series BanG Dream! Its MyGO, where she played roles including an announcer and a teacher. The spring of 2023 marked a significant period in her career as she achieved a triple debut across drama, film, and anime.

Professionally known by the stage name Reina, she has worked as a freelance performer after a period of affiliation with TAB Production. Her early career also involved work as an English cram school teacher, as well as voice-over narration for major corporate promotional videos and work as a kimono model.