Heinrich Laehr (10 March 1820 – 18 August 1905) was a German psychiatrist born in Sagan, Silesia.
In 1843 he obtained his medical doctorate from the University of Halle, where he was a student of Peter Krukenberg (1787–1865). In 1848 he became an assistant to Heinrich Philipp August Damerow (1798–1866) at the Provinzial-Irrenanstalt outside of Halle. In 1853 he founded Schweizerhof, a mental asylum for women at Zehlenderf-Berlin. Despite numerous obstacles, the institution experienced expansion throughout his lifetime. In 1889 his son Hans (1856–1929) became medical director of the clinic. In 1898 at Zehlendorf he established Haus Schönow, a sanatorium for individuals with nervous disorders. His son Max (1865–1936) served as its director.
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