A multi-instrumentalist is a musician who plays two or more musical instruments, often but not exclusively at a professional level of proficiency.

Georg Philipp Telemann was a German Baroque composer and multi-instrumentalist. He is one of the most prolific composers in history, at least in terms of surviving oeuvre. Telemann was considered by his contemporaries to be one of the leading German composers of the time, and he was compared favourably both to his friend Johann Sebastian Bach, who made Telemann the godfather and namesake of his son Carl Philipp Emanuel, and to George Frideric Handel, whom Telemann also knew personally.