Mioko Yokoyama (1989, Japan) is a composer based in Finland since the year 2015, after receiving her Master's Degree in composition at Tokyo University of the Arts. She finished her second Master's Degree in composition under the guidance of Veli-Matti Puumala at the Sibelius Academy, where she is currently working as a part-time teacher.

Her pieces have been performed in Japan, Finland, the United States, Germany, Austria, Iceland, Norway, and France by various professional musicians. Her study and compositions have been supported by e.g. YAMAHA music foundation, Martin Wegelius Foundation, Sibelius Foundation, Scandinavia-Japan Sasakawa Foundation, Musiikin edistämissäätiö, and Madetoja Foundation.