Lamoral, 1st Prince of Ligne (19 July 1563, in Château de Belœil – 6 February 1624, in Brussels) was a diplomat in the 17th century.

Lamoral, Count and after 1601 first Prince de Ligne and Prince d'Épinoy, was the son of Philip, Count of Ligne (died 1583), and his wife, Countess Marguerite de Lalaing (died 1598), daughter of Philip, Count of Hoogstraten.

As a diplomat, the first Prince de Ligne was involved in many historic events of his time.

He represented Archduke Albert of Austria and Infanta Isabella Clara Eugenia of Spain at the French court of Henri IV of France, in Spain and again in Paris, to congratulate King Louis XIII of France with his marriage with the daughter of Philip III of Spain.

In 1601 he received from Rudolf II, Holy Roman Emperor the hereditary title of Prince de Ligne.