Robert Anderson Huebel is an American comedian and actor. He is best known for his sketch comedy work on the MTV series Human Giant and for his role of Dr. Owen Maestro on the Adult Swim series Childrens Hospital. He also appeared as Russell on the FX/FXX series The League and as Len Novak on the Amazon Prime Video series Transparent. In December 2022, Entertainment Weekly called Huebel "the premier d-bag character actor of his generation".

Human Giant is a sketch comedy show starring writer/performers Aziz Ansari, Rob Huebel, and Paul Scheer, and directed primarily by Jason Woliner. The show ran for two seasons on MTV. In 2008, the group was offered a third season and was reportedly developing a feature film with Red Hour Productions, but these projects did not transpire due to Ansari's commitments to starring in the NBC show Parks and Recreation. In 2010, Ansari, Huebel and Scheer reunited to do a skit for the 2010 MTV Movie Awards.