Giovanni Battista Desio (1628âÂÂ1677) was a Roman Catholic prelate who served as Bishop of Venosa (1674âÂÂ1677).
Giovanni Battista Desio was born in Naples, Italy on 28 April 1628 and ordained a priest on 8 April 1651.
On 28 April 1628, he was appointed Bishop of Venosa by Pope Urban VIII. On 16 May 1674, he was consecrated bishop by Giulio Spinola, Bishop of Nepi e Sutri, with Giacomo de Angelis, formerly Archbishop of Urbino, and Pier Antonio Capobianco, formerly Bishop of Lacedonia, serving as co-consecrators.
He served as Bishop of Venosa until his death in August 1677.