Rieko Miura is a Japanese actress, voice actress, and singer born on September 1, 1973, in Tokyo, Japan. Her career in entertainment began after she won a contest on the Fuji Television program Paradise GoGo!! in 1989, which led to her becoming a member of the popular idol group CoCo. Following the group's disbandment in 1994, Miura transitioned to a solo career, focusing on both live-action acting and voice acting.

As a voice actress, Miura is best known for two significant roles. She provided the voice for Komachi Ono in the long-running television anime series Kochira Katsushika-ku Kamearikouen-mae Hashutsujo, also known as Kochikame, a role she played from 1998 to 2004. Her other major voice role is the protagonist Yomiko Readman, also known as Agent Paper, in the Read or Die OVA series in 2001 and its television sequel, R.O.D the TV, from 2003 to 2004. This role is noted as her first voice acting part and is considered a semi-iconic character in her career.

In addition to her voice work, Miura has maintained an extensive career as an on-camera actress, appearing in numerous television dramas and films. Notable live-action credits include roles in series such as The Kindaichi Case Files, The Great White Tower, He Who Can't Marry, and its sequel. Her early career as a singer with CoCo and as a solo artist is also a significant part of her professional background, and she has released multiple singles and albums. Miura has been affiliated with the talent agency Production Ogi throughout much of her career.