Allstedt (German pronunciation: [ˈalʃtɛt] ) is a town in the district of Mansfeld-Südharz, in Saxony-Anhalt, Germany. It is situated approximatively 10 km southeast of Sangerhausen.

Allstedt is mentioned as the tithable place Altstedi in Friesenfeld in the Hersfeld Tithe Register, created between 881 and 899.

Within the German Empire (1871–1918), Allstedt was part of the Grand Duchy of Saxe-Weimar-Eisenach.

In 2010 Allstedt absorbed 12 former municipalities, that became subdivisions of the town.

The town Allstedt consists of the following 13 Ortschaften or municipal divisions:

• Johann Karl Wilhelm Voigt (1752–1821), mineralogist
• Adolph Schmidt (1815–1903), jurist
• Otto Piltz (1846–1910), painter

• Melchior Acontius, humanist and poet (1515–1569 in Allstedt)
• Gottfried Arnold, Lutheran theologian, (1700–1704) court preacher in Allstedt
• Johann Wolfgang von Goethe, (1749–1832), acted several years at Castle Allstedt
• Thomas Müntzer, (c. 1489 – 1525), acted in 1523–1525 Allstedt

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  Town Hall
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  Mill
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  Beyernaumburg Castle
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  Beyernaumburg Castle