Wilhelm Carl Grimm (also Karl; 24 February 1786 – 16 December 1859) was a German author and anthropologist. He was the younger brother of Jacob Grimm, forming the renowned literary duo known as the Brothers Grimm. Wilhelm's work, along with his brother, laid the foundation for the study and compilation of folklore and fairy tales that are celebrated worldwide.

One year after his brother Jacob started studying law at the University of Marburg, Wilhelm followed. In 1825, Wilhelm married Henriette Dorothea Wild, also known as Dortchen. Together they had four children: Jakob Grimm (1826-1826), Herman Friedrich Grimm (1828-1901), Rudolf Georg Grimm (1830-1889), and Auguste Luise Pauline Marie (1832-1919).

From 1837 to 1841, the Grimm brothers joined five other professors at the University of Göttingen to form a group known as the Göttinger sieben. They protested against Ernst August, king of Hanover, accusing him of violating the constitution, which led to their dismissal.

Wilhelm Grimm passed away in Berlin, leaving behind a legacy of storytelling and linguistic research.