Yumi Morio is a Japanese actress and voice actress. She was born on June 8, 1966, in Saitama Prefecture, Japan. Her birth name is Yumi Kawai, and she is affiliated with the talent agency Stardust Promotion.

Morio has an extensive career in entertainment, but she is well-recognized for her work in anime voice acting. Her most prominent and long-running voice role is Reiko Akimoto in the beloved and long-running anime series Kochira Katsushika-ku Kameari Kōen-mae Hashutsujo, commonly known as Kochikame. She voiced the character of Reiko Akimoto, the wealthy and kind-hearted assistant to the main character, throughout the television series which aired from 1996. She also reprised this role for the franchise's feature films, including Kochira Katsushika-ku Kamearikouen-mae Hashutsujo: The Movie released in 1999 and Kochira Katsushika-ku Kamearikouen-mae Hashutsujo The Movie 2: UFO Shūrai! Tornado Daisakusen in 2003. Her portrayal of Reiko Akimoto continued for the special finale, Kochikame THE FINAL: Ryōtsu Kankichi Saigo no Hi, which aired in 2016.

Another significant anime role for Morio was Kasumi Kashimoto in the series Hiatari Ryōkō, which aired in 1987. She also voiced the character in the related film Hiatari Ryōkō! Yume no Naka ni Kimi ga Ita, released in 1988. In addition to these, she took on the role of Non Oyamada in the 1991 anime series Sweet Spot.

Beyond these major roles, the provided information confirms her work as a voice actress across multiple projects, demonstrating a sustained career in the industry. While she is known for these specific characters, her work is part of a larger filmography that includes live-action television dramas and films.