Odhran Ua hEolais (Irish: Ódhrán, Odhrán, Odrán, Odráin, pron. "Orin", dim. of Odar 'gray', anglicised "Horan", died AD 994), was a medieval scribe and scholar at the abbey of Clonmacnoise. He was born, and lived in the medieval region of Conmaicne Réin, which corresponds to present day south county Leitrim. We do not know who his parents were, or any significant details of his personal life. Odhran moved to county Offaly in adult life, and became Lector and scribe of Clonmacnoise. His death is recorded in the Irish Annals, and his grave slab is preserved to this day, with the inscription legible as early Irish script.