The Llibre dels fets (), originally spelled Libre dels feyts (literally in English: "Book of Deeds"), is the autobiographical chronicle of the reign of James I of Aragon (1213–1276). It is written in Old Catalan in the first person and is the first chronologically of the four works classified as The Four Great Catalan Chronicles, all belonging to the early medieval Crown of Aragon (in the northeastern part of what is now Spain), and its first royal dynasty, the House of Barcelona. James I inherited as a child the titles of King of Aragon, Count of Barcelona, and Lord of Montpellier, but also became by conquest King of Majorca and King of Valencia. James emphasises in his chronicles his conquest of Majorca (1229) and of Valencia (1238).