Jeff Gutheim is an American screenwriter. In 2005, Gutheim was hired by New Line Cinema to write the last draft of Full of It (2007), a teen comedy starring Ryan Pinkston, Kate Mara, Craig Kilborn and Carmen Electra. In June 2007, Gutheim wrote and went on tour to shoot a series of webisodes centered on the band Fall Out Boy. In 2009, he was hired by WWE Studios to write the final draft of Knucklehead (2010), a film starring Big Show, Mark Feuerstein, Melora Hardin, Dennis Farina and Will Patton. He is the partner of British comedian Catherine Tate, with whom he co-wrote the six-part BBC One sitcom Queen of Oz (2023) starring Tate.