The first architect of the St. Peter's Basilica. He proposed a Greek cross plan, the center of which would be surmounted by a dome slightly larger than that of the Pantheon.

• Donato Bramante

• Giuliano da Sangallo

• Fra Giocondo

• Raphael Sanzio

The second architect of St. Peter's Basilica

• Baldassare Peruzzi

• Giuliano da Sangallo

• Fra Giocondo

• Antonio Sangallo

The third architect of St. Peter's Basilica where he contributed foundation strength

• Baldassare Peruzzi

• Giuliano da Sangallo

• Fra Giocondo

• Antonio da Sangallo

The fourth architect of St. Peter's Basilica, he changed the Greek cross plan into a Latin cross plan.

• Raphael Sanzio

• Baldassare Peruzzi

• Michaelangelo Buonarotti

• Giacomo Della Porta

The fifth architect of St. Peter's Basilica, he reverted the Latin cross plan back to the original Greek cross plan.

• Raphael Sanzio

• Baldassare Peruzzi

• Michaelangelo Buonarotti

• Giacomo Della Porta

The sixth architect of St. Peter's Basilica where he contributed the Pauline Chapel, vestibule, campanile, and central dome

• Baldassare Peruzzi

• Giuliano da Sangallo

• Fra Giocondo

• Antonio da Sangallo

The seventh architect of St. Peter's Basilica, he continued the Greek cross plan and the dome.

• Raphael Sanzio

• Baldassare Peruzzi

• Michaelangelo Buonarotti

• Giacomo Della Porta

The eighth architect of St. Peter's Basilica, he added the lion's masks over the swags on the drum in honor of Pope Sixtus and adding a circlet of finials around the spire at the top of the lantern, as proposed by Sangallo.

• Raphael Sanzio

• Baldassare Peruzzi

• Michaelangelo Buonarotti

• Giacomo Della Porta

The ninth architect of St. Peter's Basilica, he completed the dome in 1590.

• Domenico Fontana

• Giacomo da Vignola

• Carlo Maderna

• Gian Lorenzo Bernini

The tenth architect of St. Peter's Basilica, he added a side copula (dome on a dome).

• Domenico Fontana

• Giacomo da Vignola

• Carlo Maderna

• Gian Lorenzo Bernini