!!The 1947 film:

* AwardCategoryFraud: Kris Kringle is the story's central character and the one with the most screentime, and yet Creator/EdmundGwenn was nominated for and won the UsefulNotes/AcademyAward for Best ''Supporting'' Actor.
* BillingDisplacement: While Kris Kringle is definitely the story's central character, Creator/EdmundGwenn was billed third behind Creator/MaureenOHara and John Payne in the original film. This wound up paying off for Gwenn, who was nominated for (and won) the Best Supporting Actor Oscar, in a case of AwardCategoryFraud.
* ButIPlayOneOnTV: Creator/MaureenOHara once said that for decades children would come up to her asking "Are you the lady who knows SantaClaus?" – to which she would respond "[[SugarWiki/HeartwarmingMoments Yes, what would you like me to tell him?]]"
* ColbertBump: This film gave the UsefulNotes/MacysThanksgivingDayParade (which was just recovering from its two-year absence during UsefulNotes/WorldWarII) a huge boost in popularity, as pointed out in the parade's 85th anniversary special.
* DyeingForYourArt: Creator/EdmundGwenn grew a beard and gained thirty pounds for his role as Kris.
* EnforcedMethodActing: Creator/NatalieWood was genuinely surprised when she tugged at Creator/EdmundGwenn's beard while filming and saw him naturally react in minor pain.
* ExecutiveMeddling: The film was originally released in ''May'' despite its Christmas theme, due to [[Creator/TwentiethCenturyStudios 20th Century Fox]] head Darryl F. Zanuck believing that people were more willing to go to the movies in the summer. This famously led to a marketing campaign that hid the movie's Christmas themes, including a trailer which, rather than showing scenes from the film itself, depicted a fictional Fox producer trying to figure out how to sell it to the public while several contemporary stars (including Creator/RexHarrison, Creator/AnneBaxter, and Peggy Ann Garner) accosted him on the studio lot to rave about it. Fortunately, the film turned out to be a massive success anyway and actually ran long enough that it was still in theaters when Christmas ''actually'' rolled around.
* FriendshipOnTheSet: Creator/MaureenOHara and Creator/NatalieWood formed a close relationship while making the film. O'Hara would later state in her biography that she considered Wood her favorite out of all the child actors she worked with during her film career and she was devastated when she learned of Wood's death in 1981.
* KeepCirculatingTheTapes: The first colorized version, which happened to be the first color conversion job by Color Systems Technology, was only used for early television broadcasts and has never surfaced on home video.
* OutOfHolidayEpisode: Despite taking place at Christmas and centering around a man who [[MaybeMagicMaybeMundane may or may not]] be SantaClaus, the film was originally released in ''May''. This was because summer was seen as a more profitable time of year for new releases, and resulted in the marketing focusing on the romance sub-plot rather than the primary but off-season festive story.
* TheRedStapler: In the wake of this film, department stores like Macy's and Gimbels really did start the goodwill efforts of referring customers to their rivals during Christmas shopping season, a practice that lasted until [[NewMediaAreEvil online shopping]] mostly displaced department stores.
* SelfAdaptation: Valentine Davies wrote this movie and its novelization.
* StillbornFranchise: John Payne wanted really badly to make a sequel, and Creator/MaureenOHara claimed they had talked about it for years. He apparently wrote a screenplay for it but died before it could be produced.
* ThrowItIn: Child actor Robert Hyatt, who played the District Attorney's son who gets questioned on the stand, came up with the "Daddy told me so" line, which was unscripted.
* WorkingTitle: The original intended title was ''Christmas Miracle on 34th Street''. The Christmas part was dropped when all references to the holiday were removed from the marketing campaign. (The title of the script that Creator/MaureenOHara was first shown was ''The Big Heart'', which became the film's [[MarketBasedTitle initial UK release title]].)

!!The 1973 remake:
* KeepCirculatingTheTapes: It has yet to receive a DVD release, and has also disappeared from Creator/{{Netflix}}.
* WhatCouldHaveBeen:
** Creator/NatalieWood and her husband Creator/RobertWagner were approached to play Karen Walker and Bill Schaffner, respectively with Natalie's daughter Creator/NatashaGregsonWagner, who was three years old at the time, playing Susan. However, Natalie and Robert refused due to the fact that they didn't want their daughter to go into acting at a young age like Natalie did.
** Creator/MelissaGilbert auditioned for the role of Susan Walker since she was a fan of the 1947 version, however she wasn't given the role.

!!The 1994 remake:
* AbilityOverAppearance: The original plan was to give a GenderFlip to Susan and have the remake's child be a boy named Jonathan. According to Creator/MaraWilson's autobiography, a few people she had worked with recommended her for the part, and the character became a girl named Susan once again.
* CreatorBacklash: Mara Wilson disliked how Susan was rewritten during filming. She was conceived as a more interesting and intelligent child, but they kept dropping these traits to emphasize her cuteness. A lot of critics had a SweetnessAversion to the character, which Mara herself agrees with.
* TheDanza: Middle name variant. Susan's middle name is Elizabeth, as is Mara Wilson's.
* RemakeCameo: Alvin Greenman, who played Alfred in the original, plays the doorman. Ironically, the character of Alfred was AdaptedOut in this version.
* StarMakingRole: Although she had gotten a lot of attention for ''Film/MrsDoubtfire'', this put Creator/MaraWilson on the map as one of the top child stars in TheNineties.
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