Johann Hinrich Röver (born January 2, 1812, in Bramstedt; died 1895 in Hausneindorf) was a German organ builder based in Stade. Initially trained as a carpenter, he worked from 1840 to 1850 with the organ builder Peter Tappe in Verden, focusing on the construction of Kastenladen (box windchests). In 1856, Röver started his own organ building business in Meyerhof (near Beverstedt) and moved to Stade in 1863. His sons, Carl Johann Heinrich and Friedrich Wilhelm Ernst Röver, joined the family business, which was transformed into the open trading company Johann Hinrich Röver & Söhne on July 1, 1881. Johann Hinrich Röver retired from the business on September 1, 1886, and his son Ernst took over the company from Adolf Reubke, which closed in 1921. Johann Hinrich Röver passed away in 1895, and his son Heinrich continued the family business until 1926, when it dissolved due to competition from the more industrialized organ builder P. Furtwängler & Hammer, economic decline after World War I, and the death of Heinrich's son, the intended successor.

Röver completed 15 new organ constructions and 21 more within the family business with his sons. He built organs in the romantic style but often retained historical organ facades and mechanical slider and Kegelladen (cone windchests). He gained recognition for his development of the Röhrenpneumatik (pneumatic tubing) and the mechanical box windchest, for which he is considered the inventor. Röver had a significant presence in the organ landscape between the Elbe and Weser rivers, maintaining a near-monopoly for many years.

https://de.wikipedia.org/wiki/Johann_Hinrich_R%C3%B6ver