Frank Ashmore is an American actor who provided the voice for the character Sachio Sadahama, known as the Great Uncle, in the English-language dub of the 2011 Japanese anime film A Letter to Momo. His participation in this film represents a foray into anime voice acting within a career primarily defined by extensive work in live-action television, film, and video games.

Born in El Paso, Texas, Ashmore began his acting career in the early 1970s and built a substantial resume across multiple decades. He is perhaps best known for his dual role as the alien characters Martin and his brother Philip in the influential 1980s science fiction miniseries V and its sequels. His film credits also include roles in popular comedies such as Airplane! and Airplane II: The Sequel.

Beyond his on-screen appearances, Ashmore has an extensive body of voice work in the video game industry. Notable credits include voicing the character Leo Galante in the critically acclaimed games Mafia II and Mafia III, as well as providing voices for Dead Space 3 and The Darkness II. In recognition of his stage work, he won the Los Angeles Drama Critics Circle Award for Featured Performance in 2005. While his role in A Letter to Momo stands as a notable credit in animation, it is an exception within a career focused on live-action performance and video game voice-over. There is no public information indicating recurring collaborations with specific anime directors, studios, or a pattern of regular work in the anime industry.