Girolamo Cassar

Girolamo Cassar
Ġlormu Cassar
Bornc. 1520
Diedc. 1592
Resting placeChurch of Porto Salvo, Valletta
NationalityMaltese
Occupation(s)Architect and military engineer
EmployerOrder of St. John
Notable workVarious buildings in Valletta, including Saint John's Co-Cathedral, the Grandmaster's Palace and the auberges
StyleMannerist
SpouseMattea Cassar
ChildrenVittorio Cassar
Gabriele Cassar
Marietitina Cassar
Battistina Cassar
Caterinella Cassar
Gio Domenico (extra matrimonial)

Girolamo Cassar (Maltese: Ġlormu Cassar, c. 1520 – c. 1592) was a Maltese architect and military engineer. He was the resident engineer of the Order of St. John, and was admitted into the Order in 1567. He was involved in the construction of Valletta, initially as an assistant to Francesco Laparelli, before taking over the project himself. He designed many public, religious and private buildings in the new capital city, including Saint John's Co-Cathedral, the Grandmaster's Palace and the auberges. He was the father of Vittorio Cassar, another architect and engineer.