Sirtori (Brianzöö: Sìrtur) is a comune (municipality) in the Province of Lecco in the Italian region Lombardy, located about 35 kilometres (22 mi) northeast of Milan and about 13 kilometres (8 mi) southwest of Lecco. As of 31 December 2004, it had a population of 2,844 and an area of 4.3 square kilometres (1.7 sq mi).