La continuación apócrifa del "Quijote" cervantino, escrito por quien firma como Alonso Fernández de Avellaneda, y publicado en la segunda mitad de 1614, ha conocido una interesante difusión en Europa y América. Los problemas críticos que esta continuación plantea son de primer orden y afectan a distintos factores de la producción desde la transmisión editorial a través de sus distintos procesos, desde el manuscrito al volumen impreso, hasta el establecimiento de la identidad de Avellaneda, que ha sido atribuida a casi todos los autores del Siglo de Oro, desde, rizando el rizo, el propio Cervantes hasta Lope de Vega, Quevedo, Tirso de Molina, Ruiz de Alarcón o Cristóbal Suárez de Figueroa.
Alonso Fernández de Avellaneda is pseudonym of a man who wrote a sequel to Cervantes’ Don Quixote. The identity of Fernández de Avellaneda has been the subject of many theories, but there is no consensus on who he was. One theory holds that Avellaneda’s work was a collaboration by friends of Lope de Vega.
Critical opinion has generally held Avellaneda’s work in low regard, and Cervantes himself is highly critical of it in his own Part 2. However, it is possible that Cervantes would never have completed his own continuation were it not for the stimulus Avellaneda provided. Throughout Part 2 of Cervantes' book Don Quixote meets characters who know of him from their reading of his Part 1, but in Chapter 59 Don Quixote first learns of Avellaneda’s Part 2, and is outraged since it portrays him as being no longer in love with Dulcinea del Toboso. As a result of this Don Quixote decides not to go to Zaragoza to take part in the jousts, as he had planned, because such an incident features in that book. From then on Avellaneda’s work is ridiculed at frequent intervals; Don Quixote even meets one of its characters, Don Alvaro Tarfe, and gets him to swear an affidavit that he has never met the true Don Quixote before.