Momone Iwabuchi is a retired Japanese voice actor known for her debut leading role in the 2017 anime film Kimi no Koe o Todoketai (Your Voice -KIMIKOE-). She was born on March 1, 2000, in Miyagi Prefecture, Japan. Her career began after she successfully auditioned for the Kimikoe Project, a talent search organized by Tohokushinsha Film and Family Gekijo. She was selected as one of six winners from approximately 3,000 applicants. This opportunity led to her debut as a voice actor and as a member of the voice actor unit NOW ON AIR, with her designated unit color being pink.

Iwabuchi is best known for her first and most prominent role, Shizuku Dobashi, in the film Kimi no Koe o Todoketai. In the film, she was part of an ensemble main cast that included fellow NOW ON AIR members and veteran voice actor Suzuko Mimori. Following this debut, she had a series of minor roles in television anime. In 2019, she appeared as a female student in Pastel Life, Manaria Friends, and Outburst Dreamer Boys, and as a young girl in No Guns Life. In 2020, she continued with small parts in The Tatami Time Machine Blues and a second season of No Guns Life.

Her voice acting work extended to web animations and video games. In 2021, she voiced a child character in the Tatooine Rhapsody episode of Star Wars: Visions. In video games, she contributed to major titles such as Dragon Quest XI S: Echoes of an Elusive Age, Final Fantasy VII Remake, and the Japanese game Fox -Flame of Xenocide-. She also participated in the multimedia project Cheer球部！, voicing the character Sakura Irizawa and performing as a member of its associated voice actor unit, Qace.

A recurring theme in her work was her close collaboration with other members of the NOW ON AIR unit, which consisted of Misako Iino, Mina Katahira, Mitsuho Kambe, Hitomi Suzuki, and Yuki Tanaka. They were not only cast together in the KIMIKOE film but also released music. Iwabuchi demonstrated creative talent within the group, contributing lyrics to the song Light escape from their first album, with her work being praised by the music producer for requiring no alterations. Her career was relatively brief; in 2021, NOW ON AIR announced a hiatus, and on December 28, 2021, her contract with her talent agency, Office PAC, ended, leading to her retirement from the entertainment industry.