Chase Masterson is an American actress and singer recognized for her work in live-action television, particularly as Leeta on Star Trek: Deep Space Nine, as well as for her contributions to voice acting in animated features and anime dubs. Her career in animation includes voicing characters in several Japanese anime series and films released for the North American market.

Masterson established a notable presence in the English dubbing of anime in the late 2000s and early 2010s. She is perhaps best known for her role as Mamiya in the Fist of the North Star franchise. She first voiced the character in the 2009 direct-to-video movie Fist of the North Star: The Shin Saga. Masterson reprised this role for subsequent entries in the series, including Fist of the North Star: The Ray Saga, Fist of the North Star: The Souther Saga, and Fist of the North Star: The Toki Saga, all released in 2011.

Beyond Fist of the North Star, her anime voice credits from this period include performing various character roles in the anime television movie Lun Lun the Flower Girl and its sequel Lun Lun the Flower Girl 2, as well as voicing Queen Lacet in the anime television series Starzinger. In 2007, she was cast as the voice of Janice in the animated feature film Robotech: The Shadow Chronicles, a science fiction film set in the Robotech universe.

Masterson has continued to work in voice over and animation, reprising her most famous role in other media. She voiced her Star Trek: Deep Space Nine character, the Bajoran dabo girl Leeta, in an animated format for the series Star Trek: Lower Decks in 2023. She has also provided the voice for Leeta and Empress Leeta in the massively multiplayer online role-playing game Star Trek Online since 2010. Outside of the Star Trek franchise, she voiced the computer system in the television series Pandora in 2019.