Ren Komai is a Japanese actress who was born on December 2, 2000, in Hirosaki, Aomori Prefecture. She is affiliated with the talent agency BOX CORPORATION. While her primary career is in live-action film and television, she has also performed voice acting work for an animated feature.

Komai began her entertainment career after being scouted by her agency following her graduation from junior high school. She made her acting debut in 2017 with a role in the television drama "I Was Born But...". Her first leading role in a film came in 2021 with "Koto no ha" (The Sound of Grass), a performance that earned her the Best Newcomer Award at the 34th Nikkan Sports Film Awards. Her other notable live-action credits include roles in the films "The Voice That Makes a Stuffed Toy Talk is Tender" and the television dramas "Execution!! ~Dog and I and the Executioner~" and "Goodbye Teacher".

In the realm of anime, Ren Komai is recognized for her voice role as Aya in the 2019 animated feature film "ON-GAKU: Our Sound". This film, directed by Kenji Iwaisawa, is a musical comedy about a group of high school delinquents who form a band to impress their only friend, Aya. This voice performance constitutes her most prominent and well-documented credit in animation. Beyond this role, her filmography does not indicate any other significant or recurring voice acting work in anime series or films, nor does it show established collaborations with specific anime directors or studios. Her professional achievements are primarily rooted in her live-action acting career, with her voice role in "ON-GAKU: Our Sound" standing as a notable, singular contribution to the anime medium.