Chiko Mizumori (水森 ちこ, Mizumori Chiko, born February 15) is a Japanese voice actress (seiyu) from Saitama Prefecture. Her real name and former stage name is Chikako Sugimura (杉村ちか子, Sugimura Chikako). She is affiliated with Black Ship. She was previously affiliated with Doujinsha (currently al-share) and Stay Luck. Her blood type is O and her height is 164 cm. Her hobbies are watching sports, basketball, light exercise, reading novels on publishing websites, and her special skill is basketball.

In 2014, she joined the voice acting group "Nigodoru!" of the streaming service SHOWROOM, where she was in charge of the role of Mashiro Yukino, which she played until 2016. In 2016, she joined the Stay Luck affiliated voice acting training school "Follow-Up". She was a member of Stay Luck from 2018 to March 31, 2024, when she left the agency. On July 1, 2024, she announced her transfer to Black Ship. At the same time, she changed her stage name from Chikako Sugimura (杉村 ちか子) to Chiko Mizumori (水森 ちこ).