Masumi Tsuda is a Japanese actress and voice actress born on September 11, 1963. She is a native of Yamaguchi Prefecture, having grown up in the city of Shinnanyo before it became part of the present-day city of Shunan. After graduating from Yamaguchi Prefectural Tokuyama High School, she pursued theatrical training at the Seinenza Research Institute. She launched her professional acting career in 1986 when she officially joined the Seinenza theater troupe.

Tsuda has built a career with a variety of voice roles in notable anime series and films. Her anime credits include appearances in long-running series such as Detective Conan and Great Teacher Onizuka. She also played a role in the critically acclaimed animated feature film In This Corner of the World. In the field of international dubbing, she provided the Japanese voice for the character Sally Watson in the 2018 film Bumblebee, a role originally performed by actress Pamela Adlon. Sally Watson is a nurse and the mother of the film's protagonist, Charlie.