Maki Mizuno is an actress under Toho Entertainment in Japan. She graduated from the affiliated junior and senior high schools of the Faculty of Education at the University of Tokyo, and from Toyo Eiwa Women's Junior College. She gained prominence through numerous appearances in the Saturday Mystery Theatre series.

In 2002, she graduated from Hattori Nutrition College and obtained a chef's licence. In 2004, she married Masazumi Gotoda, a member of the Liberal Democratic Party, and they had a son. They separated in 2009.

In April 2018, she resumed her university studies. In March 2021, she graduated from the Department of Education within the Faculty of Liberal Arts at Sacred Heart University, obtaining a Level 1 Kindergarten Teaching Licence (Yōchien Kyōiku Isshū Menkyo).