Planes, Trains and Automobiles is a 1987 American comedy film written, produced and directed by John Hughes and starring Steve Martin and John Candy with supporting roles by Laila Robins and Michael McKean. It tells the story of a high-strung marketing executive and a goodhearted but annoying shower curtain ring salesman who become travel companions when their flight is diverted and share a three-day odyssey of misadventures trying to get to Chicago in time for the executive's Thanksgiving Day dinner with his family.

The film received critical acclaim, with many praising it for Hughes branching out from teen comedies, and for Candy's and Martin's performances. It has become a Thanksgiving Day tradition for many.