The Haarlem organ is a famous pipe organ located in the St. Bavo Church in Haarlem, Netherlands. Built in the 1730s by Christian Müller, it is renowned for its exceptional sound quality and intricate design. The organ features over 4,500 pipes and is considered one of the finest examples of Baroque organ craftsmanship. This historic instrument has been played by many notable organists, including the composer Frans Brüggen and the renowned musician Willem de Boer. The Haarlem organ is not only a significant musical instrument but also a popular attraction for visitors interested in music history and architecture.