Johann Ernst Rembt (c. 1646–1702) was a German composer and organist of the late Baroque period. He is primarily known for his contributions to the genre of sacred music and instrumental works, particularly for organ. Rembt was associated with the North German school of organists, which emphasized intricate counterpoint and expressive melodies. Notable works by Rembt include a collection of organ compositions that reflect both liturgical and secular influences, showcasing his skill in developing complex fugues and chorales. His music often features rich harmonic textures and is characterized by a deep sense of spirituality. Rembt's impact on music lies in his role in the evolution of the North German organ tradition, which would later influence composers such as Johann Sebastian Bach. His works contributed to the development of the organ repertoire and showcased the instrument's potential for both worship and artistic expression. While not as widely recognized as some of his contemporaries, Rembt's contributions to the Baroque organ repertoire remain significant within the context of early music studies.