Giovanni Gatto (died 1484) was a Roman Catholic prelate who served as Bishop of Catania (1475–1479)^[1] and Bishop of Cefalù (1472–1475 and 1479–1484).^[2]

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On 1 Jun 1472, Giovanni Gatto was appointed during the papacy of Pope Sixtus IV as Bishop of Cefalù.^[2][3][4] On 18 Aug 1475, he was appointed during the papacy of Pope Sixtus IV as Bishop of Catania.^[1][3][4] On 8 Feb 1479, he was again appointed during the papacy of Pope Sixtus IV as Bishop of Cefalù.^[2][3][4] He served as Bishop of Cefalù until his death in 1484.^[2][3][4]