Emi Miyajima is a Japanese voice actress from Hokkaido, born on March 17. She is affiliated with the talent agency Accent. Miyajima graduated from the Sapporo Campus of the Hokkaido School of Art, where she specialized in a voice acting course, and she further honed her skills at the Accent Training School, being a graduate of its 13th "Shine" program class. She made her professional debut as a voice actress in 2012.

Her career encompasses a wide range of roles in anime, video games, and dubbing for foreign productions. In anime, her versatility is evident in performances that include both human characters and non-human mascots. Notable roles that contributed to her career breakthrough include Sae Asahina in Haruchika: Haruta & Chika, Mitsuyo Akaike in Centaur's Life, and Haruka Kiyan in After the Rain. As specified, she voices Kumayuru, a gentle and fluffy bear companion, in the series Kuma Kuma Kuma Bear. She also plays Mayumi Uchida, nicknamed Mayu-chan, the starboard navigation controller in High School Fleet, a role she has reprised for OVAs and a feature film. Her other anime credits include supporting roles in productions such as Bleach: Thousand-Year Blood War, Deaimon, and Higurashi: When They Cry – Gou/Sotsu.

Beyond anime, Miyajima is active in the video game industry, with roles such as Nana Torimaru in Glass Heart Princess and Yui Kurokami in Murder Maiden. She also contributes to the dubbing of Western films and television series. While information on specific recurring creative partnerships is limited, a notable professional collaboration is with director Yuu Nobuta, who worked on both High School Fleet and Kuma Kuma Kuma Bear. Her achievements are marked by her consistent work across a variety of media and her recognition for portraying a broad spectrum of characters, from energetic teenagers to cute mascots. She has also participated in character song recordings, such as for the Haruchika series.