Victor Jacobi, Jakobi Viktor (22 October 1883 – 10 December 1921) was a Hungarian operetta composer.
He studied at Zeneakadémia (Academy of Music) in Budapest at the same time as the noted Hungarian composers Imre Kálmán and Albert Szirmai. Jacobi began his career as "Jakabfi Viktor" on 17 December 1904 with the operetta "A rátartós királykisasszony".
His most famous operetta is "Szibill". The performance of this operetta was cancelled in London because of the beginning of World War I.
After that, he left London for the United States and during his stay in New York City he became very ill. He died there at the age of 38.