Lambert-Sigisbert Adam (10 October 1700 – 12 May 1759) was a lorrain sculptor born in 1700 in Nancy. The eldest son of sculptor Jacob-Sigisbert Adam, he was known as Adam l’aîné ("the elder") to distinguish him from his two sculptor brothers Nicolas-Sébastien Adam, known as "Adam le jeune" ("the younger"), and François Gaspard Balthazar Adam. His sister Anne Adam married Thomas Michel, an undistinguished sculptor, and became the mother of famous sculptor Claude Michel, known as Clodion, who received his early training in the studio of his uncle Lambert-Sigisbert.