* AlternativeCharacterInterpretation / BaseBreaker: Vanessa is either a {{Woobie}} who wants to be a mother or a ManipulativeBitch who doesn't have the emotional fortitude to be a good parent. There's seemingly no gray area; people who see the film are either with her or against her.
* BrainBleach: Oh, GOD. Those [[UnusualEuphemism PORK SWORDS]]!!!
* EsotericHappyEnding: Some viewers have a [[AbusiveParents very dark]] interpretation of Vanessa's future relationship with Juno's son and where it might lead. Though the movie paints her in a sympathetic light for choosing to go ahead with the adoption after Mark leaves, one can't help but wonder how she'll cope with being a single parent while still reeling from her painful split with Mark.
* GeniusBonus: While the movie mentions that Juno's named after the Roman goddess Juno, it doesn't mention that one of the main domains of the goddess is childbirth.
%%* HypeAversion
* NoYay: Mark and Juno, when they dance together.
** Mark and Juno in general. More than one viewer might have thought this movie was about to take a turn into ''much creepier'' adulterous MayDecemberRomance territory with the way Mark kept being so friendly to Juno and the way she kept spending time alone with him, but no, that's not what happens.
* RonTheDeathEater / TheScrappy: Vanessa is subject to this by haters of the film.
* UnfortunateImplications: The film was criticized for making teenage pregnancy seem light-hearted and virtually consequence-free. Diablo Cody defended the film by saying that it would have been much shorter if Juno had simply received an abortion.
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