Papa Alexander IV (takriban 1199 – 25 Mei 1261) alikuwa Papa kuanzia tarehe 12/20 Desemba 1254 hadi kifo chake. Alitokea Jenne, Roma, Italia. Jina lake la kuzaliwa lilikuwa Rinaldo. Alikuwa mpwa wa Papa Gregori IX. Alimfuata Papa Inosenti IV akafuatwa na Papa Urbano IV. 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 Kuhusu Papa Alexander IV katika Kamusi Elezo ya Kikatoliki