Jeremiah Clarke (c. 1674–1707) was an English composer and organist, primarily associated with the Baroque period. He is best known for his instrumental music, particularly the "Prince of Denmark's March," commonly referred to as "Trumpet Voluntary." This piece has become a staple in wedding ceremonies and is often mistakenly attributed to Henry Purcell, though it is Clarke’s original composition. Clarke served as the organist at St. Paul's Cathedral in London and held positions at various churches throughout his career. His works include an array of vocal and instrumental music, such as anthems and chamber pieces, though many have not survived to the present day. Despite his relatively short life and the limited body of work, Clarke's influence on the Baroque style is significant, particularly in the realm of ceremonial and celebratory music. His compositions are characterized by their melodic charm and structural clarity, which have made them enduring favorites in classical music repertoires. Clarke's legacy is particularly evident in the continued popularity of "Trumpet Voluntary," which remains a beloved piece in both classical and popular music contexts.