Cosroe Dusi (July 28, 1808 – October 9, 1859) was an Italian painter in the Neoclassical style, active for many years in St Petersburg, Russia, painting mainly sacred and historical subjects.

He enrolled in 1820 at the Academy of Fine Arts of Venice, where his mentor was the painter Teodoro Matteini, who had also taught the influential Hayez.

In 1829 at the annual exhibition of the Accademia, he displayed The Nymph Salmacis seduces the innocent Hermaphroditus, a Virgin and child with St John, and two small paintings depicting scenes from writings of Gasparo Gozzi.

For the church of Santa Maria Assunta of Taufers, he painted a Holy Family with young St John the Baptist (1839).

After the Teatro La Fenice burned down in a fire, Dusri was commissioned in 1837–1838 to paint the sipario (main drop-curtain) for the newly rebuilt theater house.

For an exhibition held in the Venetian Academy to celebrate the visit, Drusi displayed seven works: Romeo and Juliet; the Communion of St Martin of Tours, (Socrates reproaches) Alcibiades among the Heterae;[14] the Prayers of his bride convince Henry IV to absolve the prisoners of Calais; a Landscape, Portraits of a family, and finally an unspecified sketch for a historical painting.

In Russia, he painted portraits of the Grand Duke and members of the imperial family and the court, including General Suhozanet (1842), Kavos (1849), of Feodosiya Tarassova Gromova.

His Mary Queen of Scots led to the scaffold granted him membership in the Academy of Fine Arts of St. Petersburg in 1842, another painting of Alcibiades among the Heterae, made him an academician (1843), and finally, his Deposition, obtained him a post of professor (1851).

He participated in the encaustic decoration of the wooden ceiling of the gallery of ancient painting of the Hermitage, depicting the Seasons and antique artworks and buildings, (based on drawings by Georg Hiltensperger).