R. Dwight is a professional name used by the American voice actor and screenwriter Ardwight Chamberlain. He has built a career providing voices for English-language dubs of Japanese anime, as well as working in television and video games. One of his noted anime roles is Fritz Robinson in the English dub of the Swiss Family Robinson anime series.

His work in anime includes a variety of other characters, such as the Streamline Pictures dub of Goemon Ishikawa XIII in Lupin III: The Mystery of Mamo and Jean in the Streamline dub of Nadia: The Secret of Blue Water. His filmography also features roles in Robotech II: The Sentinels as Rem, Barefoot Gen as Mr. Pak and the narrator, and as Chen in 8 Man After, among others.

Beyond anime, Chamberlain is widely recognized for his portrayal of the enigmatic Vorlon Ambassador Kosh in the science fiction television series Babylon 5, a role he played from 1994 to 1997. He also provided the voice for Nicolas Conrad in the video game Shadow Hearts: Covenant. In addition to his voice acting, he has worked as a screenwriter, contributing episodes to the animated series Digimon: Digital Monsters.