Leonhard may refer to:
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Leonhard Euler
Leonhard Euler ( , ; 15 April 170718 September 1783) was a Swiss mathematician, physicist, astronomer, geographer, logician and engineer who founded the studies of graph theory and topology and made pioneering and influential discoveries in ma ...
(1707–1783), Swiss mathematician and physicist
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Leonhard Hutter (1563–1616), German theologian
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Karl Leonhard (1904–1988), German psychiatrist
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Jim Leonhard (1982– ), American football safety
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LEONHARD (2009– ), Oslo-based DJ collective
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Leonhard Rauwolf (1535–1596), German physician and botanist
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Leonhard Stejneger
Leonhard Hess Stejneger (30 October 1851 – 28 February 1943) was a Norwegian-born American ornithologist, herpetologist and zoologist. Stejneger specialized in vertebrate natural history studies. He gained his greatest reputation with reptiles ...
(1851–1943), American herpetologist
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Wolfgang Leonhard
Wolfgang Leonhard (16 April 1921 – 17 August 2014) was a German political author and historian of the Soviet Union, the German Democratic Republic and Communism. A German Communist whose family had fled Hitler's Germany and who was educated i ...
(1921-2014), German author & historian
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