Ardwight Chamberlain (sometimes credited as R.D. Chamberlain or R. Dwight, February 16, 1957, San Mateo, California, USA) is an American voice actor and screen writer currently living in Los Angeles, California. He is best known as the voice of Vorlon Ambassador Kosh on the science-fiction television series Babylon 5. He has also written a number of episodes for the animated TV show Digimon: Digital Monsters, has appeared on the game show Jeopardy!, and has written and provided voices for the English dubbed versions of several Japanese anime.
Chamberlain did the voice for both Kosh (a main cast member of the series) and Ulkesh in the Babylon 5 series starting in 1994 until 1997, totaling 20 episodes. Although he has been "the voice" of Kosh, the man underneath the encounter suit was Jeffrey Willerth.
He provides the voice for the character of Nicolai (Nicolas) Conrad in the English language version of the video game Shadow Hearts: Covenant (2004).
Several of his roles have been mistaken for Kirk Thornton.
| Year | Image | Character | Title |
|---|---|---|---|
| 1984 | 
|
Pink Chameleon | Katy the Caterpillar |
| 1984 | 
|
Bee Supervisor | Katy the Caterpillar |