Papa Alexander I alikuwa Papa kuanzia takriban 108/109 hadi kifo chake takriban 116/119. Alitokea Roma, Italia. Alimfuata Papa Evaristus akafuatwa na Papa Sixtus I. Taarifa mbalimbali zinadokeza kuwa Alexander alichangia sana ustawi wa liturujia na jimbo kwa jumla. Tangu kale anaheshimiwa kama mtakatifu, pengine mfiadini. Sikukuu yake ni tarehe 3 Mei au 16 Machi. Watakatifu wa Agano la Kale Orodha ya Watakatifu Wakristo Orodha ya Watakatifu wa Afrika Orodha ya Watakatifu Wafransisko Orodha ya Mapapa https://www.vatican.va/content/vatican/en/holy-father.index.html#holy-father Benedict XVI. The Roman Martyrology. Gardners Books, 2007. ISBN 9780548133743. Chapman, John. Studies on the Early Papacy. Port Washington, NY: Kennikat Press, 1971. ISBN 9781901157604 Fortescue, Adrian, and Scott M. P. Reid. The Early Papacy: To the Synod of Chalcedon in 451. Southampton: Saint Austin Press, 1997. ISBN 9781901157604. Jowett, George F. The Drama of the Lost Disciples. London: Covenant Pub. Co, 1968. OCLC 7181392 Loomis, Louise Ropes. The Book of Popes (Liber Pontificalis). Merchantville, NJ: Evolution Publishing. ISBN 1889758868 Kuhusu Papa Alexander I katika Kamusi Elezo ya Kikatoliki Encyclopaedia Britannica: Saint Alexander I