Waleran I of Luxembourg, Lord of Ligny

Waleran I of Luxembourg (died 5 June 1288 in the Battle of Worringen) was since 1281 Lord of Ligny and La Roche.

He was the second son of Henry V, Count of Luxembourg and Margaret of Bar.

He married Jeanne, Dame de Beaurevoir (died before December 1300), and had:

• Henry II, died 1303, 1295 Lord of Ligny
• Waleran II (1275–1354) Lord of Ligny, Roussy and Beauvoir, married Guyotte Châtelaine de Lille († 1338)
• Philipotte
• Elisabeth
• Marguerite, nun
• Marie (died 1337), married Jean de Ghistelles (killed in 1346 in the Battle of Crécy)

He was killed together with his brother Henry VI, Count of Luxembourg in the Battle of Worringen against John I, Duke of Brabant. His eldest son, Henry II of Ligny, succeeded him.
Waleran of Luxembourg is one of the protagonists in Le Tournoi de Chauvency by trouvère Jacques Bretel.