Horch (German pronunciation: [hɔʁç] (listen)) was a car brand manufacturer, founded in Germany by August Horch & Cie at the beginning of the 20th century.

It is one of the predecessors of the present day Audi company, which itself resulted from the merger of Auto Union Aktiengesellschaft (AG) and NSU Motorenwerke in 1969. Auto Union AG in turn was formed in 1932, following the merger of Horch, DKW, Wanderer and the original Audi Automobilwerke GmbH Zwickau, established by August Horch in 1910.

In 2021, Audi reused the Horch name as a flagship trim level for the Audi A8 in China to compete with the Mercedes-Maybach S-Class.