Pio Joris (8 June 1843 - 6 March 1921) was an Italian painter, engraver and watercolorist.
Pio Joris was born in Rome and attended the Istituto di Belle Arti as a child.
In 1861, he enrolled at the Accademia di San Luca, where he remained for just a year.
On a visit to the 1st Esposizione Nazionale di Belle Arti of Florence in 1861, he was attracted by the naturalistic works from the Naples school.