List of Famous people with last name Grubb

Margaret Louise "Polly" Grubb was the first wife of pulp fiction author and Scientology founder L. Ron Hubbard, to whom she was married between 1933 and 1947. She was the mother of Hubbard's first son, L. Ron Hubbard, Jr. and his first daughter, Katherine May "Kay" Hubbard.

Jeff Grubb is an author of novels, short stories, and comics and a computer and role-playing game designer in the fantasy genre. Grubb worked on the Dragonlance campaign setting under Tracy Hickman, and the Forgotten Realms setting with Ed Greenwood. His written works include The Finder's Stone Trilogy, the Spelljammer and Jakandor campaign settings and contributions to Dragonlance and the computer game Guild Wars Nightfall (2006).

Robert Grubb is an Australian actor. He studied acting at National Institute of Dramatic Art (NIDA), where he graduated in 1978. There he was a fellow student of his future co-star Mel Gibson.