"Guess Who's Coming to Christmas" is the first Christmas episode of the ABC sitcom Happy Days. It originally aired on December 17, 1974 during the show's second season.
Howard wants Christmas Eve to only include the family, but Richie discovers that Fonzie will be all alone.
- This episode featured one of eleven appearances by the eldest Cunningham brother, Chuck, later infamously retconned out of existence.
- The episode was later repackaged with a frame of having Richie flash back on these events to Al Delvecchio.