Jacobi is a Latinized form of Jacob, from Hebrew Ya'aqov, meaning "supplanter" or one who follows.
Jacobi is a Latinized and Italianate form of Jacob, one of the great patriarchal names of the Hebrew Bible. Jacob — Ya'aqov in Hebrew — means 'one who follows at the heel' or, in a figurative sense, 'supplanter,' a reference to the Biblical narrative in which Jacob grasped his twin brother Esau's heel at birth. The name carries extraordinary historical and theological weight: Jacob became Israel, father of the twelve tribes, and his story of wrestling with an angel and earning a new name is one of the most psychologically rich in all of scripture.
The Latinate -i suffix, as in Jacobi, transforms a patriarchal name into something more fluid and individualized. The surname form Jacobi has distinguished bearers across European history, most notably Carl Gustav Jacob Jacobi, the nineteenth-century German mathematician whose contributions to elliptic functions, number theory, and mechanics were foundational to modern mathematics. In American culture, Jacobi has gained traction as a given name in African American communities, where it carries a strong, scholarly weight while also feeling contemporary.
The actor Derek Jacobi, the celebrated British Shakespearean, gave the name lasting theatrical prestige. As a first name in the modern era, Jacobi threads between the ancient and the modern with remarkable elegance. It honors Biblical and classical tradition while the -i ending gives it a distinctly contemporary flair. Parents are drawn to it as a more distinctive alternative to Jacob or James, a name that carries gravitas without the familiarity that can dull a great name's edges.