Papa Alexander III (1100/1105 – 30 Agosti 1181) alikuwa Papa kuanzia tarehe 7/20 Septemba 1159 hadi kifo chake. Alitokea Siena, Italia. Jina lake la kuzaliwa lilikuwa Rolando Bandinelli. Alimfuata Papa Adriano IV akafuatwa na Papa Lucius III. 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 Alexander III katika Kamusi Elezo ya Kikatoliki