Tomomi Mizuma is a Japanese female voice actor affiliated with the talent agency Mausu Promotion. She was born on June 26, 1990, in Ibaraki Prefecture. After graduating from the Voice Actor and Actor Department at Nippon Engineering College, she entered the Mausu Promotion附属養成所 training school in 2012 as a 27th-term student and officially joined the agency in April 2014. Her colleagues from the same training school term include voice actors Yuki Kuwahara, Marika Kouno, and Maika Takai.

Mizuma's career includes a variety of roles in anime, games, and dubbed foreign media. One of her earliest anime roles was Gatchapen in the 2010 series Tachumaru Gekijō. She gained recognition for her first major leading role as the character Tiat in the 2017 fantasy anime WorldEnd: What are you doing at the end of the world? Are you busy? Will you save us? (often shortened to SukaSuka). Another notable role includes voicing the character Tanuki in the web anime series Dōshitemo Eto ni Hairitai, a project by her agency.

Her other anime credits include柚叶芽衣 in Aikatsu!, Min Fan in重神機パンドーラ, a cat in Aikatsu Friends! ~Kagayaki no Jewel~, and Megalo in Interspecies Reviewers. In the gaming world, she has voiced characters such as Iguni in White Cat Project,ユンユン in Gothic wa Mahou Otome, and レスト・バカンス in Uchi no Hime-sama ga Ichiban Kawaii. She also had a recurring role as the character Hack Montblanc in the 2021, 2023, and 2025 video games of the Fuga: Melodies of Steel series.

Beyond voice acting, Mizuma has been involved in radio, serving as an assistant MC for Radio Kansai's program "小野坂昌也の10年つづくラジオ" and as a Thursday MC for Nippon Cultural Broadcasting's "本気!アニラブ". She was also a personality for the radio show "Anime Tanteidan 3" for about two years during her vocational school days. Her known special skill is the ability to split her tongue into three parts.