Giovanni Pietro de Pomis (ca.1565 or 1569/70 – 6 March 1633) was an Italian painter, medailleur, architect and fortress master builder.

On 25 October 1595 de Pomis married Judith Anna Dermoyen, the daughter of a Dutch court tapestry master.

Traveling with his patron to Rome and Loreto and with Ferdinand's mother, the Archduchess Maria to Spain de Pomis became a close acquaintance of his later principal, Hans Ulrich von Eggenberg.

Beside his activity as a painter, medailleur and architect he was also a fortress master builder in Görz, Trieste, Gradisca and Fiume.

This confirmation of nobility, also afforded an improvement to the coat of arms and lent de Pomis the title von Truiberg.