Claus Wisser

In 1987, he was one of the founding members of the Rheingau Musik Festival, together with Michael Herrmann, Tatiana von Metternich-Winneburg, Michael Bolenius, Hans-Clemens Lucht, and Ulrich Rosin. He succeeded Walter Fink as chairman of the Rheingau Musik Festival Förderverein, an association to support the festival. Honoring his 60th birthday on 30 June 2002, the festival staged a performance of Carl Orff's Carmina Burana at Eberbach Abbey, with soloists Annette Dasch, Gert Henning-Jensen, and Željko Lučić, the choir Orfeón Donostiarra, and the hr-Sinfonieorchester conducted by Hugh Wolff, which was recorded. Wisser has also sponsored the Städel museum and the Caricatura Museum Frankfurt, and the University of Frankfurt. He began a project to transform the former Johannisberg Abbey into a hotel and event location.

Wisser was a member of the Federal Convention for the election of the German Bundespräsident, in 1999 and in 2017.

In 1965, Wisser founded a company for the cleaning of office buildings, dropping out of the university. He led it from small beginnings to Wisag [de], a concern for cleaning, maintenance of parks, security, and catering, among others. He describes the services as for industry, administration, airlines, and airports, especially the traffic on the ground for the latter. In 2011, he passed on his position as chairman of the board to his son Michael Wisser, and has been chairman of the supervisory board since.

Claus Wisser (born 30 June 1942) is a German entrepreneur and a patron of music and the arts. He was head of the service company Wisag which he founded, and has been chairman of its supervisory board since 2011. He is also known for being a founding member of the Rheingau Musik Festival, and chairman of its supporting association. He was twice a member of the Federal Convention to elect the German President.