John I (died c. 881) was the Abbot of Farfa from 871/2. He made a few property acquisitions, but his abbacy comes at the start of an obscure period in Farfa's history.[1] He received a confirmation from the Emperor Louis II of all of Farfa's lands on 27 May 872 and another from Charles the Bald in 875.[2] Charles confirmed the abbey's freedom from taxation and secular jurisdiction and gave its abbots jurisdiction in suits involving subjects of the monastery's lands.[3]