Hugh de Courtenay, 1st/9th Earl of Devon (14 September 1276 – 23 December 1340) of Tiverton Castle, Okehampton Castle, Plympton Castle and Colcombe Castle, all in Devon, feudal baron of Okehampton and feudal baron of Plympton, was an English nobleman. In 1335, forty-one years after the death of his second-cousin once removed Isabel de Redvers, suo jure 8th Countess of Devon (died 1293) he was officially declared Earl of Devon, although whether as a new creation or in succession to her is unknown, thus alternative ordinal numbers exist for this Courtenay earldom.