Marco De Gregorio (12 March 1829 – 16 February 1876) was an Italian painter, who would form part of the School of Resina, painting works that spanned the spectrum from historical to genre topics.

On his returning to Campania in 1860-1861, he moved to Resina, where Giuseppe De Nittis, Adriano Cecioni, and Federigo Rossano were also soon working.

These would constitute the nucleus of the School of Resina (or in Italy known as the Republica di Portici), an artists' group founded by de Greggorio, Rossano and Nittis.

[4] Critics have praised de Greggorio's painting, Lo Zappatore (pictured) as a fine example of portraits of the labouring poor.

The digger's emaciated features under a straw hat and the tattered clothes is a tribute to the stoicism with which the subject faces daily hard work.