Erina Tsutsui is a Japanese voice actor from Nara Prefecture who is affiliated with the agency iamagency. Her birthday is January 14, and her blood type is O. She stands 160 cm tall.

Tsutsui developed an interest in voice work from a young age, fascinated by animation and the concept of a single actor voicing different characters. Despite this early interest, her parents, who worked in the medical field, wished for her to become a doctor. She initially pursued a different path, studying at Kansai University and later moving to Tokyo to work as a systems engineer for three years. Inspired by colleagues and peers who were pursuing their passions, she decided to follow her own dream of becoming a voice actor. She enrolled at the International Media College, where she received training and secured her first on-screen role just six months after beginning her studies, leading her to leave her engineering job. In addition to performing, she applies her background in advertising and design to work as a publicist for her agency, handling tasks such as website creation and flyer design.

Her voice acting credits include the role of a student in the 2014 television anime series Unconfirmed Progressing. She is recognized for playing Kureha, the Acting General Commander of the Defence Troops, in the 2016 series Hagane Orchestra. Her work also encompasses film and foreign drama dubbing. She voiced a role in the 2013 theatrical film Hakuoki: Kyoto Ranbu. Her dubbing work includes roles in The Lone Ranger, Elevator, Final Dead Call, Officer Down, and Burke and Hare.

Information on specific recurring collaborations with other industry professionals and notable achievements or awards is not available.