The Museum Wiesbaden is a two-branch museum of art and natural history in the Hessian capital of Wiesbaden, Germany. It is one of the three Hessian State museums, in addition to the museums in Kassel and Darmstadt.
The museum's art collection dates back to the former collection of Johann Isaak von Gerning from Frankfurt. Through purchases, donations and loans, the art collection has become one of the most important in Germany, especially in the area of the 19th and 20th centuries. The Museum Wiesbaden endeavours to identify Nazi plunder in its own collection and, if necessary, to return it to the legitimate heirs.