Germain Louis Chauvelin (26 March 1685 – 1 April 1762, Paris), marquis de Grosbois, was a French politician, serving as garde des sceaux and Secretary of State for Foreign Affairs under Louis XV.
Germain Louis Chauvelin came from a family of lawyers to the Parlement de Paris, which had moved to Paris around 1530 and set up home in the place Maubert quarter. In the 17th century, a branch of the family allied itself with the family of chancellor Michel Le Tellier, who took them into his service and into the service of his son Louvois. Germain Louis Chauvelin was the son of one of those who made such an alliance, Louis III Chauvelin, who was intendant in Franche-Comté (1673–1684) and in Picardy (1684–1694), by his wife, Marguerite Billiard.
On 1 November 1706, Germain Louis Chauvelin was given the joint offices of councillor to the Grand Conseil and of "grand rapporteur et correcteur des lettres de chancellerie". On 31 May 1711, he gained the post of maître des requêtes. On the death of his elder brother, Louis IV Chauvelin, in 1715, he added the officer of avocat général to the parlement de Paris then, in 1718, bought a post as président à mortier, raising him to the top of the judicial hierarchy. In the same year, he married the rich heiress Anne Cahouet de Beauvais, daughter of the 'Premier président du bureau des finances de la généralité d’Orléans'. They had several children :