•
Daniel Sempere Martín (later in the tetralogy referred to as Daniel Sempere Gispert) – The main character of the story. Son of a bookshop owner. After visiting the Cemetery of Forgotten Books and picking out
The Shadow of the Wind by Julián Carax, Daniel learns that he should treasure this book because a mysterious figure has been searching for all of Carax's books and subsequently burning them. After reading the book, Daniel becomes obsessed with its elusive author. What he doesn't realize is that there's more to the story than he could ever dream. In the climax, he marries Beatriz and has a son, Julián, named after Julián Carax. •
Tomás Aguilar – Best friend of Daniel Sempere. Tough and strong, very protective of his sister Bea, and also a rather intelligent inventor. Quiet and shy. •
Fermín Romero de Torres – Sidekick, friend, and mentor of Daniel Sempere. After some hard times and several years on the streets, he is assisted by Daniel and Daniel's father, who give him an apartment and a permanent job at the bookshop. He claims to be a former
spy who worked for the
Generalitat before the war. •
Beatriz Aguilar – Love interest of Daniel Sempere and sister of Tomás. Bea, who is a very pretty young woman, is still in school. It is due to her that Daniel and Tomás became friends in the first place because, when the two were schoolboys, Daniel made a joke about Bea that made Tomás start a fight with him. After the blood dried, they became the best of friends. Bea's father and brother are very protective of her, and she has been for several years engaged to marry an army officer, a staunch upholder of the
Francoist State. In the climax, she marries Daniel and becomes the mother of Julián Sempere. •
Don Gustavo Barceló – Friend of Daniel and his father. An older man who is a book lover and buyer. He originally offers to buy
The Shadow of the Wind from Daniel, who declines his offer. •
Clara Barceló – Niece of the wealthy Don Gustavo Barceló, very beautiful, yet blind. For several years, the young Daniel comes to her uncle's house to sit and read with her. He develops a schoolboy crush on her even though she is ten years his senior, but tries to forget her once he discovers her in a compromising position with her piano instructor. •
Julián Carax – The author of
The Shadow of the Wind. Daniel desperately seeks to find out the truth about this mysterious man: the reasons for his journeys, the truth about his childhood, and the explanation for why his books are all being destroyed. Julián falls in love with Penélope at first sight. Their love affair, however, has been doomed since the beginning, because, unknown to them, they are half-brother and sister. After being caught by her parents making love to Penélope, he flees to Paris. After the deaths of Penélope and their son, David, he writes a series of books and eventually disappears without a trace. •
Francisco Javier Fumero – The main antagonist. An odd schoolboy friend of Julián Carax who grows up to be a corrupt and murderous police inspector. •
Miquel Moliner – A schoolboy friend of Julián Carax, fun-loving and loyal. So much so, in fact, that he sacrifices his own life for Julián's. •
Father Fernando Ramos – A schoolboy friend of Julián Carax who later becomes a priest at their old school. He assists Daniel in his quest for the truth about Julián. •
Jorge Aldaya – A schoolboy friend of Julián Carax, sometimes rather moody, very wealthy. He is Penélope's older brother, and also Julián's half-brother by their father. He dies in Paris in 1936. •
Penélope Aldaya – An ethereal beauty, devoid of anything worldly, she is described as an angel of light. She and Julián fall in love with each other at first sight. It is as if destiny had planned their doomed love, as it is revealed they are half-brother and sister. After she is caught in a tryst with Julián in her governess, Jacinta's, room, her parents imprison her and discover she is pregnant with Julián's child. She dies after giving birth to David, the son of her and Julián. •
Jacinta Coronado – The devoted former governess of Penélope Aldaya, now living in a retirement home. She helps Daniel in his quest. •
Nuria Monfort – An intelligent
femme fatale who worked at the publishing house where Julián's books were published. She also conducted an affair with Julián while he lived in Paris, and although she falls deeply in love with him he does not reciprocate. Daniel goes to visit her for more information about Julián but later realizes that she fed him lies to protect Julián. She is also the daughter of Isaac Monfort, who holds the keys to the Cemetery of Forgotten Books, where Daniel found "The Shadow of the Wind". She marries Miquel Moliner, Julián's childhood friend. ==Critical reception==