Jacobi may refer to: People with the surname Jacobi.
Jacoby is a Hebrew masculine given name.
Jacoby is a surname.
Jacoby Glacier is a steep glacier draining the eastern slopes of the Ames Range between Mount Boennighausen and Mount Andrus, in Marie Byrd Land, Antarctica.
The Jacoby transfer, or simply transfers, in the card game contract bridge, is a convention initiated by responder following partner's notrump opening bid that forces opener to rebid in the just above that bid by responder.