Papa Gelasio II, O.S.B. (alifariki 29 Januari 1119) alikuwa Papa kuanzia tarehe 24 Januari au 10 Machi 1118 hadi kifo chake. Alitokea Gaeta, Italia. Jina lake la kuzaliwa lilikuwa Giovanni Caetani au Coniulo. Alikuwa mmonaki wa Wabenedikto wa Monte Cassino (Italia). Alimfuata Papa Paskali II akafuatwa na Papa Callixtus II. 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 Barraclough, Geoffrey (1964). The Medieval Papacy. Thames and Hudson. ISBN 0-500-33011-5.  Duffy, Eamon (1997). Saints and Sinners. A History of the Popes. Yale University Press. ISBN 0-300-07332-1.  Rudolf Hüls (1977). Kardinäle, Klerus und Kirchen Roms: 1049–1130. Bibliothek des Deutschen Historischen Instituts in Rom. ISBN 978-3-484-80071-7.  Papa Gelasio II katika Kamusi Elezo ya Kikatoliki