The Biblioteca Roncioniana is a public library, founded in 1726, and located on Piazza San Francesco #27 in the historic center of Prato, region of Tuscany, Italy.
The library was provisionally open in 1722, but only since 1766 has it been hosted in a portion of the Palazzo Roncioni, located in the historic center of Prato.
The palace was built 1751-1766 likely on the original design by Antonio Saller, but modified later by Francesco Arrighi and Stefano di Rigo, who brought it to completion.
The entrance atrium has a 15th-century terracotta images of the Arcangel Raphael and Tobias by the studio of Andrea della Robbia.
The ceiling of main reading room was frescoed (1789) by Luigi Catani and depicts Sloth and Wisdom (images after works of Pietro da Cortona).