Jacob Grimm (1785–1863) was a German philologist, jurist, and folklorist, best known as one of the Brothers Grimm, alongside his younger brother Wilhelm Grimm. Together, they are renowned for their collection of German folktales and fairy tales, which have become classics of world literature.

Born in Hanau, Germany, Jacob Grimm studied law at the University of Marburg and later worked as a librarian and professor. Alongside his brother Wilhelm, Jacob dedicated much of his life to researching and compiling folk tales from various regions of Germany. Their most famous work, "Children's and Household Tales" (Kinder- und Hausmärchen), commonly known as "Grimms' Fairy Tales," was first published in 1812 and contained 86 stories.

In addition to their work as folklorists, the Brothers Grimm made significant contributions to the fields of linguistics and philology. They collaborated on various projects, including the "Deutsches Wörterbuch" (German Dictionary), a comprehensive dictionary of the German language.

Jacob Grimm's scholarly pursuits extended beyond folklore and linguistics. He also wrote extensively on medieval literature, mythology, and legal history, among other subjects.

Jacob Grimm's legacy as a pioneering folklorist and linguist endures to this day, and his contributions to the study of language and folklore have had a profound and lasting impact on academic disciplines and popular culture worldwide.