Roger de Bailleul (French: [ʁɔʒe də bajøl]; died 25 September 1179) was a medieval Benedictine monk, abbot of Bec, and archbishop-elect of Canterbury. Roger was born in Lombardy, but according to the Gallia Christiana he was a native of Bailleul (although which one has not been identified), hence the name given to him. However, Robert du Mont confirms it was Lombardy. After the death of Abbot Létard, Roger was elected the seventh abbot of Bec on 6 July 1149, and blessed by Archbishop Hugh of Rouen on 25 July 1149. Roger died at Bec Abbey on 25 September 1179.