Jeremy Sims (b. 1966), born Jeremy William Hartley, played Rorf in the Farscape episodes "Till the Blood Runs Clear", "Liars, Guns and Money (2): With Friends Like These..." and "Liars, Guns and Money (3): Plan B".

After graduating from National Institute of Dramatic Art in 1990, he has appeared in many theater productions around Australia, they include Cyrano de Bergerac, White Devil and Picasso.

His film and televison credits include Kangaroo Palace, Aftershocks, Idiot Box, Fireflies and McLeod's Daughters. He won AFI's Best Actor in a lead role for a Drama series for Aftershocks and a Silver Logie Award nomination for Best Actor. His performance in Idiot Box earned him two nominations (AFI best actor category and Critics Circle Award nomination for Best Actor). He was also nominated for AFI Best Actor in a TV Drama for Kangaroo Palace.