Libro de Caballería Celestial (1544 book)

El Libro de Caballería Celestial (English: The Book of the Celestial Cavalry or Celestial Chivalry) is a Spanish-language book in two parts, credited to Hierónimo de San Pedro (Jerónimo de Sampedro), and originally released as two folios, both printed in 1544, the first, el Libro de Caballería Celestial del Pie de la Rosa Fragante ("The Root of the Fragrant Rose", or "The Foot of the Fragrant Rose-bush"), at Anveres (Antwerp) by Martín Nucio, and the second, la Segunda parte de la Caballería de las Hojas de la Rosa Fragante ("The Leaves of the Fragrant Rose"), at València by Joan Mey Flandro.

The content of the book, according to later commentators, was a refiguration of the Bible into a work of knightly romance, populated by chivalric heroes engaged in holy quests. The first book is composed of stories based on the Old Testament, divided into maravillas ("wonders"); while the second is based on the New Testament, divided into leaves, and presents the life and acts of Jesus Christ, el Caballero del Leon ("Knight of the Lion"), with Saint John the Baptist as el Caballero del Desierto ("Knight of the Desert") and the Apostles as the Knights of the Round Table, in opposition to Satan, el Caballero de la Sierpe ("Knight of the Serpent").

The work was not well-received, ultimately being condemned by the Catholic Church and included in the index librorum prohibitorum ("Index of Prohibited Books") of the Sacred Congregation of the Roman Inquisition. There are few known copies of the first folio and it is unknown if there remain any of the second.