Fons memorabilium universi ("Source of notable information about the universe") is an early encyclopedia, written in Latin by the Italian humanist Domenico Bandini of Arezzo (also given as Domenico di Bandino or Dominicus Bandinus, c. 1335 – 1418). Planned to inform and edify educated men who lack other books, the work covered God and the natural world, as was common for encyclopedias of the time, but also added a voluminous last part dealing with man and historical figures, philosophy and history, theology, ethics, heretics and women.
Bandini, a teacher of grammar and rhethoric who lived in Florence, Bologna, Città di Castello and Arezzo, worked on the encyclopedia from before 1374 until his death in 1418. In Florence he was influenced by Coluccio Salutati, causing him to emphasize topics related to the classical antiquity in his work. Bandini's son Laurentius completed and published the work after his father's death and added an introductory apology, defending the work against criticism of style.
At least 26 manuscripts survive, including one at Balliol College which has since been digitized and two at the Vatican Library. Many of these contain only parts of the work. They all date from before 1460. The whole work consists of between two and five volumes, depending on writing style and size.
The work was not very influential and was already almost forgotten in the 15th century. It was never printed, unlike the very successful 13th century encyclopedia De proprietatibus rerum by Bartholomeus Anglicus, from which Bandini had borrowed heavily. He also frequently cited the earlier works of Marcus Terentius Varro, Pliny the Elder, Gaius Julius Solinus, Isidore of Seville and Hrabanus Maurus.
The end of book 8 "on the planets" contains an unrelated interpolation praising two lawyers from Bologna. The paragraph has been interpreted as an advertisement inserted by the lawyers, either by having paid scribes or by having worked as scribes themselves.