Biblioteca civica Romolo Spezioli, Public library in Palazzo degli Studi, Fermo, Italy

The Biblioteca civica Romolo Spezioli occupies the Palazzo degli Studi at the end of Piazza del Popolo, linked to the Palazzo dei Priori by an aerial loggia called the Passetto, so the two form a single complex. Its holdings number almost 400,000 items, among them 127 parchment codices, 3,000 manuscripts, 681 incunabula and prints and drawings from the architect Giovanni Battista Carducci.

The library was founded in 1688 after Cardinal Decio Azzolino, a native of Fermo, obtained rooms on the upper floor of the Palazzo dei Priori for a public library, prompting the Dominicans to release Paolo Ruffo's bequest to the city. Romolo Spezioli, physician to Queen Christina of Sweden, left his books in 1723. After 1860 the city absorbed collections from suppressed religious houses, and in 1872 it bought about 15,000 volumes from the De Minicis brothers.

The library is named after Romolo Spezioli (1642–1723), a Fermo-born physician to Queen Christina of Sweden, who left his books to the city on condition a librarian be appointed; Nicola Cordella took the post. Its Sala del Mappamondo, the former theatre hall of Palazzo dei Priori, was fitted out at Cardinal Decio Azzolino's expense and completed in 1688 by Adamo Sacripante.

Visitors can access research services on site, consult books, and request photocopies of materials. Staff members also assist with inter-library loan requests, making materials from other collections available to patrons.

The library's historic core occupies the Sala del Mappamondo in the adjacent Palazzo dei Priori, a hall completed in 1688 by Adamo Sacripante on the commission of Cardinal Decio Azzolino. The room takes its name from the world map it displays, and it was originally fitted out as the former Sala delle Commedie, the theatre hall of the palace.