Ruggiero de Ruggieri (before 1540, Bologna - 1596/1597, Fontainebleu) was an Italian-born painter associated with the Bolognese school.
The first authenticated reference to him working with Francesco Primaticcio was in 1551; in the King's office and the guard room at the Palace of Fontainebleau.
Sometime during 1550–560, he was employed to create decorations for the Château d'Ancy-le-Franc, in the Chamber of Arts and the "Galerie de Pharsale".
Following Primaticcio's death in 1570, Ruggieri took over his functions as "Guard and Governor of the Great Garden of Fontainebleau" while Giulio Camillo Abbati [it] became "Superintendent of Paintings".
[2] In the 1590s, together with Toussaint Dubreuil, his son-in-law, he created a decorative tableau at the "Pavillon des Poêles", based on the theme of Hercules, which disappeared in 1703.