Mitsu Anzu is a Japanese voice actor primarily known for their work in adult computer games, a sector often referred to as eroge. They began their career in 2008, with their debut role being Kano Tatsu in the game Star Mine Girl. Since then, they have become a prolific figure in the industry, lending their voice to numerous characters across many visual novel titles.

Over their career, Mitsu Anzu has taken on a wide variety of roles. Some of these include Kotone Shirakawa in the television anime series Overflow. Other significant roles in games include Minette in Blessing of the Campanella, Mei'a S. Efmerara in A Sky Memory, Shigoto Toudou in The Bridge to the Starry Sky, and Isuzu Aomi in Love, Elections & Chocolate. They have also voiced characters such as Nozomi Higashiyama in Hatsuyuki Sakura, Natsuka Sawai in Monobeno, and the First Emperor in Heroes * Senki. Their work also extends to characters like Rune in Maitetsu, Yuzuki Kodaka in Aki Yume Kukuru, and Yoru Kamo in the visual novel The Girl in the Crimson Eyes.

Mitsu Anzu has frequently collaborated with specific game studios and brands, appearing in multiple titles from companies like SAGA PLANETS, feng, and Lose. Notable recurring roles include Isuzu Aomi and Tōdō Shigoto in the Ginga: The Bridge to the Starry Sky series, and Natsuka Sawai in the Monobeno franchise. They have also contributed to drama CDs, such as those for the game Hatsuyuki Sakura.

While their work is predominantly in video games, their role in the 2020 television anime Overflow brought their voice to a wider audience outside of the game industry. Mitsu Anzu is known in some sources to be a pseudonym used by another voice actor for adult-oriented roles, though this is a common practice in the industry.