Giambattista Diquattro (born 18 March 1954) is an Italian archbishop and Vatican diplomat.

Diquattro was born on 18 March 1954 in Bologna and was ordained a priest for the diocese of Ragusa in 1981.

[2] He joined the diplomatic service of the Holy See on 1 May 1985, and served in diplomatic missions in the pontifical representations to the Central African Republic, the Democratic Republic of Congo and Chad, the United Nations in New York, and later in the Vatican Secretariat of State, and in the Apostolic Nunciature in Italy.

Pope John Paul II appointed him apostolic nuncio to Panama on 2 April 2005.

[3] Pope Benedict XVI appointed him apostolic nuncio to Bolivia on 21 November 2008.