Hugh Courtenay (circa 1343 – 20 February 1374) was an English soldier.
He was the only child of Sir Hugh Courtenay, eldest son of Hugh Courtenay, 2nd Earl of Devon, and his wife Elizabeth de Vere. He became heir-apparent to the Earldom of Devon after his father's death in 1348 or 1349.
He was married in 1361 to Margaret, daughter of Guy de Bryan, 1st Baron Bryan, who died soon afterwards. His second wife, in 1365, was Maud, daughter of Thomas Holland, 1st Earl of Kent and Joan, the Fair Maid of Kent.
He took part in the Black Prince's intervention in the Castilian Civil War, and was knighted by the Prince in 1367 along with Peter of Castile, his brother-in-law Thomas Holland, and his uncles Peter Courtenay and Philip Courtenay. He distinguished himself at the Battle of Nájera that year.
In 1370 he was summoned to Parliament as Baron Courtenay but died without issue on 20 February 1374, during the lifetime of his grandfather. His widow remarried to Waleran III of Luxembourg, Count of Ligny.