''Heidi'', published 1880 in two parts named in full ''Heidi's Years of Learning and Travel''[[note]]Orig.: ''Heidi's Lehr- und Wanderjahre''[[/note]] and ''Heidi Makes Use of What She has Learned''[[note]]Orig.: ''Heidi kann brauchen, was es gelernt hat''[[/note]], is a novel by Swiss author Johanna Spyri.

''Heidi'', defined by its author as a book "for children and those who love children", quickly became a classic of ChildrensLiterature and is still one of the world's most popular books for children. Possibly it is also the internationally best known work of Swiss literature.

The novel's eponymous heroine is an orphaned [[UsefulNotes/{{Switzerland}} Swiss]] girl who, at the age of five and out of necessity, is given by her Aunt Dete into the care of her grumpy grandfather, who lives as a recluse in the Swiss Alps. The grandfather, an embittered man commonly known as the Alp-Öhi, is not at all happy about this, but eventually Heidi's {{blithe spirit}} thaws the old man's heart. But the happiness of the two is not to last, when Aunt Dete, having received an employement in the city of Frankfurt, returns to take Heidi with her to Frankfurt.

In Frankfurt, Heidi pines for the Alps, but she also finds a friend in Klara, the daughter of Aunt Dete's employer, Herr Sesemann.

Among several adaptations (even one with ShirleyTemple), ''Heidi'' was adapted in 1974 as an Anime series known as ''Anime/{{Heidi Girl of the Alps}}''. And a particularly infamous 1968 TV movie interrupted the end of a football game, causing so many complaints that the network switchboard was shut down, which is the reason why sports games that go long ''always'' override regular programming now.
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!! ''Heidi'' provides examples of:

* AdaptationalHeroism: The animated TV movie ''Heidi's Song'' inverts the trope for Tinette the maid, who is haughty and often unsympathetic in the book but in the movie has become a sweet and kind young woman who helps Heidi escape and [[TokenRomance eventually runs off with the handsome milkman.]]
* AdaptationalVillainy: Also in ''Heidi's Song'', Sebastian the butler has been changed from a good-natured ServileSnarker and an ally of Heidi's to Fraulein Rottenmeier's snobbish and brutal [[TheDragon Dragon.]]
* AluminiumChristmasTrees: The concept of a person's physical health deteriorating due to being away from home may seem strange to modern audiences, but until the late 19th century, [[http://en.wikipedia.org/wiki/Nostalgia nostalgia]][[note]]Originally a Greek word meaning "pain for home"; the English word "homesickness" is derived from it[[/note]] was considered a genuine medical condition. It was first observed among Swiss mercenaries serving abroad, and some deaths from it were even reported.
* BigEater: Peter the goatherd. Actually, everyone who arrives or visita the Alps discover that they become {{Big Eater}}s -- even Klara, who barely ate at all back in Frankfurt -- which is explained as the effect of the mountain air. Peter is still the biggest eater, though; he's always hungry and never turns down food.
* BlitheSpirit: Heidi.
* BookDumb: Peter can't read and is convinced that it's very hard and beyond what he's capable to learn.
* CheerfulChild: Heidi, of course.
** Klara as well...except in versions where she isn't.
* CoolOldLady: Klara's grandmother, so much. She's young in spirit and everybody respects her. She's wonderful to Klara and Heidi.
** Peter's grandmother counts as well. In the 1993 film adaptation, she's also a BlindSeer who helps Heidi learn to stick up for what she wants.
* CountryMouse: Heidi doesn't like the life in the city at all. She misses her dear mountains.
* CuteKitten: Heidi and Klara like them and probably Sebastian too. Fraulein Rottenmeier, on the other hand, can't stand them.
* DisabledMeansHelpless: In most adaptations, Klara's father and Fraulein Rottenmier react to her like this. Her grandmother on the other hand is aware of Klara's fragility but doesn't buy the helplessness angle.
* [[EveryoneCallsHimBarkeep Everyone Calls Him Alm-Uncle]] Or "Alp-Öhi" in the original German. We never learn his real name.
** At least two adaptations, the 1993 film and the 1937 Shirley Temple version, give us a first name: Tobias.
* FishOutOfWater: Heidi when she is forced to move to Frankfurt and become Klara's playmate.
* FoodPorn: [[MemeticMutation Admit it]]. ''[[MemeticMutation You want the cheese toast]].''
* GossipyHens: The village below the mountain is full of these. Especially on the matter of Heidi's grandfather and the myriad possible reasons for his seclusion. In some versions of the book, one of the village women (Elisabeth) even talks to Dete on their way up there so Dete can become MrExposition and explain Heidi's backstory.
* GreenEyedMonster: Peter smashes Klara's wheelchair on purpose, pretty much just because he's jealous of another playmate taking all of Heidi's time. His conscience and fear of being caught catches up to him, though.
** Klara shows jealousy because Heidi can walk.
* GrumpyOldMan: Grandfather. He gets better.
* HeroicBSOD: Heidi goes into these more and more as she can't adapt to city life, to the point of starting to ''sleepwalk''.
* IllGirl: Klara, also a LonelyRichKid.
* InHarmonyWithNature: Alm-Uncle has many elements of this (with the comeuppance that he is not a people person). Heidi manages to live in harmony with the goats and charm everyone around her. She also suffers in city environments.
* InspirationallyDisadvantaged: Klara, the IllGirl. Doubly so because she [[spoiler: learns to walk at the end.]]
* JerkWithAHeartOfGold
** Grandfather is revealed to be this after Heidi comes to live with him.
** Peter is selfish, temperamental and lazy, but at the end of the day he's not a bad person.
* KickTheDog:
** While not a ''horrible'' person per se, Aunt Dete gets two instances of this: First when she forces her niece to live with an old man everybody believes is insane and possibly dangerous just so she has time to further her career, and secondly a few years later when she then drags off the same niece, unwillingly, to do a job she doesn't want in a city she doesn't want to live in. Dete also suggests to Alm-Uncle the chance that Klara (whom the audience has not yet met) will ''die'' and then Heidi will be adopted by Klara's father. She looks forward to the prospect with distinct pleasure because it will work out better for ''her''.
** Fraulein Rottenmeier's treatment of the kittens and her abusive behavior towards Heidi is horrible. Dete didn't relish on her own behavior, unlike her.
* LonersAreFreaks: Until Heidi comes in...
* LyingOnAHillside
* MaddenIntoMisanthropy: The implied reason for Grandfather's long years of seclusion up a mountain.
* MeaningfulName: Is it any wonder that someone with the name "Rottenmeier" isn't such a nice person?
* MisunderstoodLonerWithAHeartOfGold: Grandfather.
* MoralityPet: Heidi seems to have this effect on her grandfather.
* MatronChaperone: Fräulein Rottenmeier's role seems to be preventing Heidi from having too much influence on Klara.
* OnlyKnownByTheirNickname: Heidi's real name is Adelheid, like her mother. Everyone who cares the slightest bit about her calls her Heidi.
* ParentsAsPeople: Mr. Sesemann does love his girl, but can't be with her as much as he likes.
* ParentalAbandonment: Quite a bit
** Heidi: Her father Tobias died in a work accident, which was the last straw for Grandfather and prompted him to live in the mountain. Later, his wife Adelheid dies of illness, and Adelheid's sister Dete acts as a ParentalSubstitute until she dumps Heidi on the old man.
** Peter: His father is never mentioned, so he lives with his mother and his blinded grandmother.
** Klara: Her mother died and her dad is always out in business so she's taken care of by Rottenmeier and Sebastian, and sometimes by her grandmother.
* PetTheDog: Grandfather gets more and more moments like this as time goes by. Fixing Peter's grandmother's rickety shack for the sake of it was just the start.
* PuppyLove: {{In-universe}}: Heidi and Peter. Aww. (They do, in fact, get married in the sequel by Charles Tritten.)
* RichBitch: Averted by Klara and pretty much the entire Sesemann family, who are rich but [[SpoiledSweet pretty nice]]. Their head housekeeper, on the other hand, is ''not''.
** In the 1993 adaptation, Klara shows shades of being a RichBitch, but gets over it pretty quickly.
* ScareEmStraight: This is the tactic employed by Heidi (and to a lesser extent her grandfather) in order to motivate Peter to learn to read -- she tells him about the horrible schools in Frankfurt and that he'll have to go there unless he learns... and then follows up with teaching him the letters through a series of verses that warns of the terrible things that'll happen to him if he doesn't learn. It works, to the extent that he ''does'' learn to read, but the weakness of the tactic becomes apparent when it's made clear that he still hates doing it and tends to skip words that look like they'll be too difficult.
* SceneryPorn: The Alps.
* ServileSnarker: Sebastian. Tinette, the maid, has her moments as well, but is played less sympathetically.
* {{Sleepwalking}}
* SpellMyNameWithAnS: In some editions, "Detie" instead of "Dete" and "Clara" instead of "Klara" are used.
* SpoiledSweet: Klara.
* ThrowingOffTheDisability: Klara.
* TomboyAndGirlyGirl: Tomboy Heidi likes playing with the goats and being outdoors, snuck in some kittens and a turtle into the Sessemann house, and asked quite a few impertinent questions. Girly Girl Klara was always prim and proper- and had to be motivated to go outdoors and try to walk again.
* YodelLand
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