Detlef Kleuker (July 4, 1922, in Flensburg – February 15, 1988, in Brackwede) was a renowned German organ builder. The son of a high school teacher, Kleuker trained in organ building under Emanuel Kemper, working in Kemper's company from 1947 to 1954. After passing his master examination in 1955, he established his own workshop in Brackwede. Over three decades, he built 350 organs, exporting them to 20 countries, and became one of the leading organ builders in northern Germany. Following an unsuccessful organ project for the Lutheran church in Sankt Peter-Ording in 1953, Kleuker developed a weather-resistant form of the slider chest using innovative materials like Pertinax and resin-treated wood. He also utilized lightweight metals such as aluminum for valves and action, and patented several new developments. However, in later years, he reverted to traditional techniques as the new materials proved less durable.

Stylistically, Kleuker drew inspiration from North German Baroque organs, encasing them in modern, angular housings. His organ dispositions were often traditional, influenced by the Neo-Baroque movement. He was also a sought-after restorer. In 1986, Siegfried Bäune took over as managing director of the company, which was converted into a GmbH. Despite its success, the firm ceased operations in 1991/92. Kleuker's legacy remains through his contributions to organ building and restoration.

https://de.wikipedia.org/wiki/Detlef_Kleuker