Jeff Gutheim (born September 16, 1971) is an American screenwriter, who specializes in the comedy genre. Gutheim has penned scripts for Warner Bros., Paramount Pictures, New Line Cinema and WWE Studios, including rewrites of Full of It (2007) and Knucklehead (2010). His latest project is the upcoming six-part BBC One series (2023), starring Catherine Tate as a disgraced member of a fictional British Royal Family sent to rule Australia.