Giovanni Visconti may refer to: John of Gallura (died 1275), or Giovanni Visconti, Judge of Gallura, Sardinian ruler Giovanni Visconti (bishop), Roman Catholic prelate and alleged cardinal-bishop of Sabina Giovanni Visconti (Archbishop of Milan) (1290–1354), Milanese archbishop Giovanni Visconti (cyclist) (born 1983), Italian professional road racing cyclist Giovanni Battista Visconti (1722–1784), Italian archaeologist and museum curator