Alonso Quijano (Spanish: [aˈlonso kiˈxano]; spelled Quixano in English and in the Spanish of Cervantes' day, pronounced [aˈlons̺o kiˈʃano]), more commonly known by his pseudonym Don Quixote, is a fictional character and the protagonist of the novel Don Quixote de la Mancha by Miguel de Cervantes.

Some (imaginary) authors, the text says, disagree about whether his name was Quijada ("jaw") or Quesada, although by reasoning ("conjeturas verosímiles") one could arrive at the name Quijana.

At this point, Quijano is not even mentioned as a possibility, nor is Alonso, hinting the reader into one of the most notable yet purposefully obfuscated examples of an unreliable narrator.

His "real" name of Alonso Quijano is only revealed in the last chapter of Part II,[1] and with the stated purpose of demonstrating the falseness of the spurious Part II of the pseudonymous Alonso Fernández de Avellaneda, in which work the protagonist is Martín Quijada.

Sancho explains its meaning: Don Quixote is the worst-looking man he has ever seen, thin from hunger and missing most of his teeth.