Papa Yohane VIII alikuwa Papa kuanzia tarehe 14 Desemba 872 hadi kifo chake tarehe 16 Desemba 882. Alitokea Roma, Lazio, Italia. Alimfuata Papa Adriano II akafuatwa na Papa Marinus I. Anatazamwa kama mmoja kati ya Mapapa bora wa karne ya 9. 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 Yohane VIII katika Kamusi Elezo ya Kikatoliki Fred E. Engreen, "Pope John the Eighth and the Arabs," Speculum, 20 (1945), pp. 318–330