The Museo Nazionale Alinari della Fotografia (MNAF - National Museum Alinari of Photography), formerly Museo della Storia della Fotografia Fratelli Alinari is a photography museum located on the piazza Santa Maria Novella in Florence (Italy). It hosts special exhibitions on a regular basis and possesses 350.000 vintage prints from the 19th and 20th centuries.
Since 1 November 2006 it is located in the Ospedale di San Paolo, a former pilgrims' hostel that was later transformed into a school. Before that, the museum was in the Palazzo Rucellai and in the premises of the Fratelli Alinari. It was the first museum of Italy to be devoted exclusively to photography.