Giovanni Battista Deti (1580–1630) was a Roman Catholic cardinal.

[1] On 24 Jun 1623, he was consecrated bishop by Ottavio Bandini, Cardinal-Bishop of Palestrina, with Alfonso Gonzaga, Titular Archbishop of Rhodus, and Federico Baldissera Bartolomeo Cornaro, Bishop of Bergamo, serving as co-consecrators.

[1][2]

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