Girolamo Rusticucci (1537 – 14 June 1603) was an Italian Roman Catholic cardinal and bishop.
He occupied numerous important positions, including papal legate to France and Spain, Camerlengo (treasurer) and Vice-Dean of the College of Cardinals, and Vicar General of Rome.
He built a palace near Saint Peter's Square in Rome, located on a new piazza that was named after the cardinal.
[1] Pope Pius V then named him papal legate to Spain and the Kingdom of France to promote war against the Ottoman Empire.
[1] The new pope confirmed him as Camerlengo of the Sacred College of Cardinals, and he held that position from 14 February 1592 to 1593.
[1] He opted for the order of cardinal bishops on 30 March 1598, taking the Suburbicarian Diocese of Albano.