Sillaro

Infobox_river
river_name = Sillaro


caption =
origin = Sasso di San Zenobi, Tuscany
mouth = Reno, Emilia-Romagna
basin_countries = Italy
length = 66 km
elevation = c. 800 m
mouth_elevation =
discharge = 4 m²/s
watershed = c. 300 km²The Sillaro (Latin "Silarus") is a 66 km Italian torrent, a tributary of the Reno, which runs briefly through the Italian region of Tuscany and then through the Province of Bologna in Emilia Romagna. Historically its course formed the boundary between Emilia and Romagna.