Nicolas-Léopold Liébault (c. 1723 in Nancy – 1795) was an 18th-century French officer, writer and collaborator of the Encyclopédie by Diderot and D’Alembert.[1] He was the author of two articles former, dresser and fuite, providing the definition of certain military terms (régiment de Royal Lorraine).
His father was a lawyer in Nancy. His brother was Nicolas-François-Xavier Liébault (1716-1800). The brothers were commissioned as officers of the depot of the Seven Years' War since about 1756 until 1758.