Haruna Momono is a Japanese voice actor and singer born on November 25, 1991, in Chiba Prefecture. She began her entertainment career before focusing on voice acting, working as an actor, reporter, and MC. In 2010, she graduated from the Tokyo Animator School and commenced her voice acting career. She was affiliated with the Tokyo Actors' Consumer's Cooperative Society from 2012 until September 2022, after which she became a freelancer. At the start of 2023, she announced a business partnership with the agency Remax.

Momono's early voice acting career included numerous supporting roles in anime television series. In 2013, she voiced the character Eris in the Japanese dub of the animated series Lego Chima ~Animal Senshi-tachi no Densetsu~. She has also had roles in series such as YuruYuri, NakaImo, and Devil Survivor 2 The Animation. Her versatility as a voice actor is also demonstrated through her work in video games, including titles like Schoolgirl Strikers, Chain Chronicle, and Lord of Vermilion III.

A significant development in her career came with her involvement in the Bushiroad multimedia project D4DJ. She is the voice of Hiiro Yano, a member of the unit RONDO within the franchise. She has voiced this character across several anime adaptations, including the main series D4DJ First Mix, the special D4DJ Double Mix, and the mini-anime Pucchimiku D4DJ Petit Mix. In addition to her voice work, she served as the backing vocalist for the character's musical unit, RONDO, and performed insert songs for the series. Another notable role from this period is Tris in the 2021 anime series D_Cide Traumerei the Animation, based on another mixed-media project by Bushiroad.

In late 2022, Momono announced a temporary break from activities due to a chronic illness, which led to the cancellation of her scheduled appearances in D4DJ concerts and related programs. She has since returned to voice acting. Beyond her work in D4DJ, she is also known for voicing Koboshi Inohara in the game O.N.G.E.K.I. and has performed theme songs for anime series such as Hi-sCool! Seha Girls.