Hartha is a town in the district of Mittelsachsen, in the Free State of Saxony, Germany. It is situated 11 km west of Döbeln, and 12 km north of Mittweida.Personalities Carl Grünberg, woven goods manufacturer in Hartha and politician, MdR, MdL Hans Jahn, politician of the Social Democratic Party of Germany, trade unionist and resistance fighter against the National Socialism Richard Müller , chemist, discoverer of the silicone, Müller-Rochow synthesis