Umi Tenjin is a Japanese female voice actor from Tochigi Prefecture, born on March 25. She has been active in the industry since the 1990s. Her blood type is A.

Tenjin began her voice acting career in 1997, with one of her earliest roles being in Dream Crayon Kingdom. Over the course of her career, she has been affiliated with several talent agencies, including Tritorioffice, Arc Production, and Aqua Light, and now works as a freelance voice actor.

She is known for her versatile vocal range, particularly her ability to portray energetic young boys and lively girls. Her most iconic and enduring role is that of Koushiro Izumi, also known as Izzy, in the Digimon Adventure franchise. She has voiced this character across multiple television series, films, and video games, starting with the original Digimon Adventure in 1999.

Beyond her work in the Digimon series, Tenjin has built an extensive filmography in anime, OVA, and video games. Some of her notable anime roles include Ponzu, Zushi, and Kortopi in the 1999 Hunter x Hunter series, Asami Kurosaki in Mahoraba ~Heartful days~, and Miiko Yamada in Kocchi Muite! Miiko. She also voiced characters in long-running series such as Magical DoReMi and Ojamajo Doremi.

Her work in video games is also significant, most notably as the character Akane in the Summon Night series, a role she reprised in multiple installments. Other game credits include roles in Shadow Hearts II as Kosho Ishikura, Farland Symphony, and Gals Panic S2.

Tenjin's collaborations with fellow voice actors from the Digimon series are evident. Her frequent costars in that franchise include Koji Wada, Michael Shoyama, and the late Shuko Takeda. Her career has demonstrated longevity and adaptability, as she continues to take on roles in new projects, including mobile games like Kotodaman and Puzzle & Dragons, and has even appeared in recent Digimon series such as Digimon Ghost Game.