Yumi Higashino is a Japanese voice actress, singer, and actress whose career in the entertainment industry has primarily been documented in the early to mid-2000s. Born on June 1, 1980, in Nagano Prefecture, her professional activities have spanned music performance, on-screen acting, and voice work for animation.

Higashino's foray into voice acting began in the early 2000s. One of her earliest documented roles in animation was providing the voice for Mika Takahashi in the 2001 original video animation Ultraman Gaia: Once Again Gaia. Her most concentrated period of voice acting work occurred in 2004. That year, she voiced the character Shizukun in the television anime series Jubei-chan 2: Siberia Yagyu no Gyakushu. She also lent her voice to Amenbo Atsushi in the long-running NHK children's series Ojarumaru.

Higashino is notably recognized for her role as Umi in the 2004 original video animation Makasete Iruka!, which is known internationally as Grrl Power. In this independent production by director Akitaro Daichi, she played one of the three lead characters, a practical and business-minded girl who runs an odd-jobs service with her friends. Her performance as Umi contributed to the OVA receiving an Excellence Award for animation at the 2004 Japan Media Arts Festival. For this project, she also performed the title song, further integrating her musical talents with her voice acting work.

Beyond these specific roles, information on recurring collaborations with specific directors or other voice actors is not prominently documented. Her career also included significant work as a singer, most notably as the second-generation vocalist for the indie pop group Serani Poji from 2002 to 2004, and earlier as part of the musical duo nico. Her known voice acting credits remain concentrated around the mid-2000s.