- Anvilicious: Jorge's reason for hiding the book is because it promotes comedy, which might cause monks to disrespect scripture.
- Big Lipped Alligator Moment: Adso's vision, although it delivers a hint.
- Magnificent Bastard: Jorge, serial killer and Knight Templar extraordinaire-a blind old man who manages to kill a lot of people with poison, traps and a careful use of murderous books
- Purity Sue: The eccentric Ubertino da Casale.
- Slow Paced Beginning: The first hundred pages of the book go at a mindbogglingly easygoing and unhurried pace (at least compared to other murder mystery novels), with lots of obscure references and other diversions unconnected to any part of the whodunnit itself. Umberto Eco wrote a Word of God postscript in part to clarify that the hard-to-get-into beginning was a deliberate choice, in which he gave a Take That, Audience!.
Eco: Those first hundred pages are like a penance or initiation, and if someone does not like them, so much the worse for him. He can stay at the foot of the mountain.
- The Woobie: The unnamed peasant girl. A poor, nameless wretch who is sexually exploited by Salvatore and Remigio in exchange for scraps, before being arrested as a witch to face torture and execution, despite, as Adso says, being the only true innocent in the whole affair.
- WTH, Casting Agency?: Sean Connery and Christian Slater play professional celibates.
- According to the movie director, he initially turned down Connery for this exact reason, until Sean Connery forced himself into his office, and demanded to read just one line. And then he accepted.