Isaac Nathan (1790–1864) was a British composer, musician, and music publisher, known primarily for his contributions to the genre of Jewish music and early 19th-century classical music. He is often recognized for his efforts to transcribe and popularize traditional Jewish melodies, making them accessible to a broader audience. Nathan's notable works include "Hebrew Melodies," published in 1815, which features settings of poems by Lord Byron set to traditional Jewish tunes. This collection played a significant role in introducing Jewish folk music to Western audiences and helped to foster an appreciation for the musical heritage of Jewish communities. In addition to his work with Jewish music, Nathan was a proponent of the early Romantic style, blending folk elements with classical forms. His impact on music is particularly significant in the context of ethnic music preservation and the fusion of cultural traditions, paving the way for future composers and musicians to explore and celebrate their cultural identities. His legacy endures in the continued interest in Jewish musical heritage and the integration of folk traditions into classical music.