Papa Sixtus V, O.F.M.Conv. (13 Desemba 1521 – 27 Agosti 1590) alikuwa Papa kuanzia tarehe 24 Aprili/1 Mei 1585 hadi kifo chake. Alitokea Grottammare, Ascoli Piceno, Italia. Jina lake la kuzaliwa lilikuwa Felice Peretti. Alimfuata Papa Gregori XIII akafuatwa na Papa Urbano VII. Orodha ya Mapapa https://www.vatican.va/content/vatican/en/holy-father.index.html#holy-father https://www.vatican.va/content/vatican/en/holy-father.index.html#holy-father Papa Sixtus V katika Kamusi Elezo ya Kikatoliki