Michiru Yamazaki is a Japanese voice actress and stage actress born on February 10, 1978, in Ibaraki Prefecture. She is affiliated with the talent management firm Ken Production. A graduate of the Yoyogi Animation Institute, Yamazaki began her career with a strong foundation in stage performance, appearing in numerous theatrical productions before and during her voice acting work. This background in live performance contributed to her versatile and energetic vocal style, which became a hallmark of her work in anime and other media.

Yamazaki is known for her ability to portray a wide range of characters, particularly young boys, with a spirited and dynamic presence. Her most prominent and enduring role is that of Ikki Tenryou, the protagonist of the Medarot franchise. She voiced the character in the original 1999 television anime series Medarot and its 2000 sequel, Medarot Damashii, as well as in numerous video games based on the series. This role made her a recognizable voice for audiences during the late 1990s and early 2000s.

In addition to her signature role in Medarot, Yamazaki has built a diverse portfolio of voice credits. In the long-running magical girl series Ojamajo Doremi, she provided the voice for the recurring character Takao Kimura across multiple installments, including the original series, Ojamajo Doremi Sharp, and More! Ojamajo Doremi. She has also been heard in a variety of other anime, such as the role of a young Tatsunoshin in Samurai Champloo, the character Kanata in Suki na Mono wa Suki Dakara Shou ga Nai!!, and a young Pierrot in Yakitate!! Japan. In the Digimon franchise, she voiced the young Masaki in Digimon Savers. A more recent notable role is Kōta Izumi in the popular series My Hero Academia.

Beyond anime, Yamazaki's work extends to other areas of voice performance. She has contributed to video games, such as voicing Yukino Oribe in Tokyo Majin Gakuen Kenpucho, and has been involved in dubbing foreign films, including the Japanese-language version of the 2004 live-action film Thunderbirds. Her career also reflects a strong commitment to children's education and entertainment. She has participated in storytelling events for children as a member of the KenKen Park reading team and has served as an assistant lecturer for the 8D Kids Club, an organization focused on early childhood education and artistic development. In the early 2000s, she was part of the voice actress unit Shichimi alongside fellow performers Hitomi Nabatame and Ayako Ito, with whom she released music. Through her sustained work in animation, video games, and children's programming, Michiru Yamazaki has established herself as a versatile and enduring presence in the Japanese entertainment industry.