Fumiko Ōsaka is a Japanese voice actress born on November 21, 1971. Her career in anime includes a range of supporting roles across various series produced in the late 1990s and 2000s.

She is known for the role of Loretta Oratorio in the series Wild Arms - Twilight Venom, which aired from 1999 to 2000. Loretta is a thief and crest sorceress who travels with her companions Mirabelle and Jerusha, frequently crossing paths with the protagonist Sheyenne Rainstorm. Ōsaka also voiced the character Reiko in the 2004 series Phoenix.

Additional voice roles include Celindia in Arc the Lad (1999), Belladonna in Noir (2001), Fino's Mother in Jing: King of Bandits (2002), a Bakery Employee in Elfen Lied (2004), and Kaori Shinmei in Detective Conan. Her work primarily consists of guest or recurring characters in television anime series from this period.