Giovanni Antonio de' Rossi (1616–1695) was an Italian architect of the Baroque period, active mainly in Rome.
He was a contemporary of Carlo Rainaldi. In 1657, he completed the sacristy of Tivoli Cathedral.[1] That same year, he designed the renovations to Chiesa di San Rocco all'Augusteo, adding a dome, the sacristy and a new chapel.[2] He created the shrine over the high altar, designed by Rainaldi, in Santa Maria in Campitelli to house the icon of Santa Maria in Portico.[3]
At about the time he became the architect of the Monte di Pietà in Rome until his death and built its oval chapel from the 1650s onwards.
For Pope Clement X he carried out an extensive and hurried refurbishment (1670–76) of the family's Palazzo Altieri near the Church of Il Gesù .
He erected the church of Santa Maria in Campo Marzio in 1682-1685 and was involved in the design of the Cappella Lancellotti in St John Lateran.
His Palazzo D'Aste-Bonaparte on Piazza Venezia influenced the later designs of Alessandro Specchi's Palazzo de Carolis and Tommaso de Marchis' Palazzo Millini-Cagiati.