Stuart Milligan is an American actor and voice artist, born in Boston, Massachusetts, in 1953, who has built a prolific career in the United Kingdom. He began working for the BBC in 1979 and became a sought-after voice on British radio, frequently called upon for American-sounding roles in various productions. This radio work included playing Superman in multiple DC Comics projects for the BBC between 1988 and 1993, as well as the Riddler in a 1994 adaptation of Batman: Knightfall.

In the 1990s, Milligan became a prominent voice in English-language dubs of Japanese anime, particularly for productions by Manga Entertainment in the UK. He voiced Dr. Daisuke Ido, the cybernetics doctor who rebuilds the cyborg heroine, in the 1993 UK dub of the OVA Battle Angel. In the movie Odin: Starlight Mutiny, he took on the role of Naoki Ryo. He voiced Killy Gagley in the Manga UK dub of the 1985 film GoShogun: The Time Étranger. Another of his roles from this period was Izosaki in the OVA Goku II: Midnight Eye.

Milligan's work in anime extends to a wide range of other titles from the era. His credits include roles in The Guyver: Bio-Booster Armor, Genocyber, Mad Bull 34, and Bubblegum Crash for Manga UK. He also provided voices for the OVAs Bounty Dog, Junk Boy, Ultimate Teacher, and The Dark Myth, sometimes in uncredited parts. Later, he voiced the character Ida Kyoji in the UK dub of the acclaimed film Millennium Actress.

Beyond anime, Milligan has had an extensive and varied career. He has appeared in films such as Aliens, Outland, and Ragtime. His television work includes roles in series like Jonathan Creek, The Young Indiana Jones Chronicles, and he has played U.S. Presidents in various productions, including an appearance in the film Wonder Woman 1984. He has also remained active in theatre, including a West End production of Oklahoma! and has voiced characters in video games such as Pac-Man World 3.