Dumb and Dumber To is a 2014 American buddy comedy film co-written and directed by the Farrelly brothers. It is the third film in the Dumb and Dumber franchise and a sequel to the 1994 film Dumb and Dumber. The film stars Jim Carrey and Jeff Daniels reprising their roles 20 years after the events of the first film as well as Rob Riggle (in a dual role), Laurie Holden, Rachel Melvin, and Kathleen Turner. The film tells the story of Lloyd Christmas and Harry Dunne (played by Carrey and Daniels, respectively), two dimwitted friends who set out on a cross-country road trip to locate Harry's daughter, who has been adopted.

First announced in October 2011, Dumb and Dumber To underwent a turbulent pre-production phase which included, at one point, Carrey withdrawing from the project, and Warner Bros. Pictures refusing to distribute the film. The project was eventually taken on in 2013 by Red Granite Pictures and the film was shot later that year. Released on November 14, 2014, by Universal Pictures, the film received negative reviews from critics. It grossed $36.1 million on its opening weekend and over $169 million worldwide.

On June 15, 2017, the United States Department of Justice charged that money used to produce the film was stolen from a Malaysian government investment fund. Red Granite Pictures denied knowingly accepting stolen money. Prosecutors also filed a Forfeiture Complaint in federal court to seize the rights of ownership to Dumb and Dumber To as well as the rights to the 2015 film Daddy's Home. Red Granite later made a $60 million settlement.