Hugh I may refer to:
Hugh I of Lusignan (c. 885–c. 930) Hugh I, Count of Maine (died 933) Hugh I, Viscount of Châteaudun (died 989 or after) Hugh I of France (c. 939–996), a.k.a. Hugh Capet, first King of the Franks of the Capetian dynasty Hugh I of Autun (c. 975–1039), a.k.a. Hugh of Chalon, ruler & religious leader Hugh I, Count of Empúries (c. 965–1040) Hugh I of Le Puiset (died 1096) Hugh I, Count of Ponthieu (died c. 1100) Hugh I, Count of Clermont-en-Beauvaisis (1030–1101) Hugh I of Oisy (died c. 1111) Hugh I of Jaffa (died between 1112 and 1118) Hugh I, Count of Rethel (1040–1118) Hugh I, Duke of Burgundy (1057–1093) Hugh I, Count of Dammartin (died after 1093) Hugh I of Vermandois (1057–1101), a.k.a. Hugh the Great Hugh I of Champagne (c. 1074–c. 1125), a.k.a. Hugh, Count of Champagne Hugh I, Count of Catanzaro (died 1190/5), a.k.a. Hugh Lupin the Elder Hugh I of Arborea (1178–1211) Hugh I of Angoulême (c. 1183–c. 1249), a.k.a. Hugh X of Lusignan Hugh I of Cyprus (1194/5–1218) Hugh I of Ghent (died 1232) Hugh I, Count of Blois (c. 1198–1248), a.k.a. Hugh I of Châtillon Hugh I of Charpigny (fl. early 13th century) Hugh I of Jerusalem (c. 1235–1284), a.k.a. Hugh III of Cyprus Hugh I of Chalon-Arlay (1288–1322) Hugh I de Audley (c. 1291–1347)