Attilio Simonetti (1843-1925) was an Italian painter and Antiquarian.
He was born and resided mainly in Rome: a son of Francesco, a Roman jeweler and engraver, and Carolina née Raffaeli, from a family of mosaicists.
He showed a talent for art at an early age, which brought him to the attention of a family friend, the painter Marià Fortuny.
At the age of sixteen, he began his formal studies.