Glauchau (German pronunciation: [ˈɡlaʊxaʊ] ; Upper Sorbian: Hłuchow, pronounced [ˈhwuxɔf]) is a town in the German federal state of Saxony, on the right bank of the Mulde, 7 miles north of Zwickau and 17 miles west of Chemnitz by rail (its train station is on the Dresden–Werdau line). It is part of the Zwickau district.

Glauchau was founded by a colony of Sorbs and Wends, and belonged to the lords of Schönburg as early as the 12th century.

Some portions of the extensive old castle date from the 12th century, and the Gottesacker church contains interesting antiquarian relics.

• Johann Pfeffinger (1493–1573), theologian and Protest reformer
• Georg Agricola (1494–1555), scholar and scientist
• Samuel von Pufendorf (1632–1694), jurist, economist and historian
• Ernst Friedrich Germar (1786–1853), professor of mineralogy, entomologist and local politician
• Julius Heinrich Petermann (1801–1876), Orientalist
• Ernst Kals (1905–1979), submarine commander
• Walter Schlesinger (1908–1984), historian
• Joachim, Count of Schönburg-Glauchau (1929–1998), politician, writer, Bundestag deputy of the CDU 1990–1994
• Dieter Erler (1939–1998), footballer
• Christine Spielberg (born 1941), discus thrower
• Torsten May (born 1969), boxer

Glauchau is twinned with:

• Grenay, France (1996)
• Iserlohn, Germany (1991)
• Jibou, Romania (2005)
• Lynchburg, United States (2007)
• Vermelles, France (1998)
• Zgierz, Poland (1996)

• 
  Forderglauchau Castle
• 
  Hinterglauchau Castle
• 
  A house in Leipziger street
• 
  Bismarck tower

• Glauchau Notgeld (emergency banknotes) Small currency notes from Glauchau depicting the story of how the Buttermilchturm (Buttermilk tower) got its name. webgerman.com/Notgeld/
• Glauchau Notgeld (emergency banknotes) Small currency notes from Glauchau depicting the story of the Saxon Beer wars of 1731. webgerman.com/Notgeld/