* AntiClimaxBoss: Helena Markos.
* BigLippedAlligatorMoment: The German slap-dancing scene. It serves no real purpose to the plot, and it completely interrupts the ominous atmosphere.
* CompleteMonster: Helena Markos known as the Black Queen and leader of a cult of evil witches is along with her sisters a power-hungry and sadistic HumanoidAbomination who see themselves as Death and suffering Incarnate and have for centuries amassed power and great wealth leaving only death and misery in their wake. They see mere humans as dust since they are completely removed from humanity and take great joy in massacring them and care only for maintaining their own unholy existence. They are arguably among the best examples of female Dark Lords in fiction.
* CrowningMusicOfAwesome: The entire score by Goblin is pretty impressive, sometimes even entering HellIsThatNoise territory.
* EarWorm: The intro to the main theme.
* EnsembleDarkhorse: [[http://en.wikipedia.org/wiki/Albert_%28Suspiria%29 Albert]], the little boy, has gained an inexplicable cult following.
* {{Narm}}: "[[Literature/{{Beowulf}} So]]! You've come to kill Helena Markos! A ha ha ha!"
** Averted in the original Italian dub [[NightmareFuel 'I'm coming, American! And let the living meet the dead, and the dead the living...']]
** Mostly all of Helena Markos' lines in the English dub are overly [[LargeHam hammy.]]
** The bat near the end of the movie. Seriously, had anyone who worked on that movie even seen a real bat?
** The first victim's name happens to be ''Pat Hingle''. It's either an unfortunate coincidence or one of the weirdest {{Shout Out}}s in the history of cinema.
*** Knowing Argento, it's most likely a ShoutOut.
** Immediately after the blind piano player is fired, he goes to... well, the Cine-Masochist described it as a "German brodance festival", and that's the only term that fits.
* {{Sequelitis}}: 1980's ''Film/{{Inferno}}'' and (to a far greater extent) 2007's ''Film/MotherOfTears''.
* {{Squick}}: Nothing like brushing [[spoiler: maggots out of your hair.]]
* VindicatedByHistory: Although the film was a commercial success, it was trashed by critics upon release because of its numerous plot holes and weak characterization. Nowadays, it's considered a masterpiece of SurrealHorror and one of the most visually stunning films of all time.
* VisualEffectsOfAwesome: The set design and lighting truly seems like something out of a nightmare.