Junta Terashima is a Japanese voice actor, narrator, and singer born on August 11, 1988, in the Nagano Prefecture. He is affiliated with the talent agency Kenyu Office and made his debut as a voice actor in 2009. Before pursuing voice acting, Terashima had an interest in creative fields such as becoming a manga artist or illustrator. He later focused on training as a voice actor at the Nippon Kogakuin institute.

Terashima has built a career with a wide range of roles in anime, video games, and film. One of his most prominent and recurring roles is Shin Ichijō in the King of Prism series, a part he has played in multiple films and anime installments, including King of Prism by PrettyRhythm, King of Prism: Pride the Hero, and the King of Prism: Shiny Seven Stars television anime. This role is considered a lead performance in his filmography.

His work spans numerous other television anime series. He is known for playing Hyōga Yukimura in Inazuma Eleven Go. In the musical and drama series, he voices Hisoka Mikage in A3! Season Autumn & Winter and Shiki Andō in Paradox Live the Animation. Terashima has also taken on roles such as Ōsuke Kiryū in Kono Oto Tomare!: Sounds of Life, Takumi Kijima in Ao-chan Can't Study!, Keiichi Naruse in Papa Datte, Shitai, Fucho Sonoda in Tribe Nine, and Mamoru Fujimura in TsukiPro the Animation. He also contributed to the popular sports anime Haikyū!!, voicing Kōsuke Sakunami.

In addition to anime, Terashima has an extensive presence in video games. He is the voice of Takeru Taiga in The Idolmaster SideM. He has also portrayed Tao Mongarten in the Atelier Ryza series, Fumiya Sugiura in the Judgment games, and Code in Boruto: Naruto Next Generations. More recent game roles include Rei in Pokémon Masters EX and Ifa in Genshin Impact.

Terashima is also active as a singer and musician. He debuted as a solo artist in 2019 with the release of his first extended play, 29 + 1: Miso, followed by Joy Source later that same year. A third EP, Soul To, was released in 2021. Beyond his solo work, he performs as a member of the musical units Growth, which is part of the TsukiPro project, and WAOOON, a unit he formed with fellow voice actor Akira Takizawa. His work frequently involves character songs and performances related to the multimedia franchises in which he appears.

Beyond acting and singing, Terashima has expanded his activities to include digital content creation. In 2019, he launched his own YouTube channel, Terashima Junta Studio, where he engages with fans through game streams and other content. He has also been involved in radio hosting, notably for the Inugoya Channel program.