Ludwig Georg Courvoisier
Born	8 April 1843
Died	10 November 1918(1918-11-10) (aged 75)
Nationality	Swiss
Known for	Courvoisier's law
Scientific career
Fields	surgery

Ludwig Georg Courvoisier (10 November 1843 – 8 April 1918) was a surgeon from Basel, Switzerland.^[1] He was one of the first doctors to remove gallstones from the common bile duct.^[2]

In 1890, Courvoisier published the book Casuistisch-statistische Beiträge zur Pathologie und Chirurgie der Gallenwege, a manual on biliary surgery in which he introduced the medical sign known as Courvoisier's law.^[3]

Entomology

Courvoisier was an entomologist most interested in the Lycaenidae. His entomological works include:

• Courvoisier, L. G., 1910. Uebersicht über die um Basel gefundenen Lycaeniden. Verh. naturf. Ges. Basel 21: 153–164.
• Courvoisier, L. G., 1910. Entdeckungsreisen und kritische Spaziergänge ins Gebiet der Lycaeniden. Entomologische Zeitschrift 23 (18): 92–94.
• Courvoisier, L. G., 1912. Javanische Lycaeniden gesammelt von Edw. Jacobson. Tijdschr. Ent. 55: 15–19.
• Courvoisier, L. G. 1912. Ueber Zeichnungs-Aberrationen bei Lycaeniden. Deut. ent. Zeit. [Iris] 26, pp. [38-65, pls 4,5]
• Courvoisier, L. G. 1916. Über Männchenschuppen bei Lycaeniden Verh. naturf. Ges. Basel 26, pp. [11-48, 2 pls]
• Courvoisier, L. G., 1920. Zur Synonymie des Genus Lycaena. Deutsche Entomologische Zeitschrift (Iris) [1914] 28: 143–176; [1920] 34: 230–262.

His butterfly collection and herbarium are held by the Natural History Museum of Basel.