Frobenius Orgelbyggeri, also known as Th. Frobenius & Sønner Orgelbyggeri A/S, is a renowned Danish organ-building company founded in 1909 by Theodor Frobenius in Copenhagen. Theodor, originally from Weikersheim, Bavaria, moved to Denmark in 1907 and decided to settle there after working on organ renovations in Viborg Cathedral. The company relocated to Lyngby in 1925, where it continues to operate. 92 years later it was again relocated to Birkerød. Frobenius Orgelbyggeri is known for its work in the classical organ tradition, emphasizing mechanical actions and slider windchests, aligning with the principles of the Organ Reform Movement and neo-classical design.

The company has constructed over 1,000 organs, including the largest church organ in Denmark, located in Aarhus Cathedral. Frobenius organs are notable for their modern casework and distinctive arrangement of pipes. Their instruments are featured in prominent locations worldwide, such as The Queen's College in Oxford, First Church Congregational in Cambridge, Massachusetts, and the Takayama Mahikari Grand Shrine in Japan. The firm is recognized for its contribution to both new organ construction and the restoration of historical instruments.

https://www.frobenius.nu/history_en.html
https://de.wikipedia.org/wiki/Frobenius_Orgelbyggeri
https://en.wikipedia.org/wiki/Frobenius_Orgelbyggeri