Roj Nemennuh Sarton is a fictional Spacer scientist in Isaac Asimov's Robot series. He appears in Asimov's book The Caves of Steel, where he is murdered by an anti-Spacer Earthman. He is also the Auroran roboticist who created robot R. Daneel Olivaw. R. Jander Panell was built after he was killed based on his work.
