Karl Leonhard Reinhold

Karl Leonhard Reinhold
Reinhold by Peter Copmann [da], 1820
Born	(1757-10-26)26 October 1757 Vienna, Archduchy of Austria
Died	10 April 1823(1823-04-10) (aged 65) Kiel, German Confederation
Education	Jesuitenkollegium St. Anna (1772–1773) Barnabitenkollegium St. Michael (1773–1778) University of Leipzig (1784; no degree)
Era	18th-century philosophy
Region	Western philosophy
School	Austrian Enlightenment[1] German idealism
Institutions	Barnabitenkollegium St. Michael (1778–1783) University of Jena (1787–1794) University of Kiel (1794–1823)
Academic advisors	Immanuel Kant (epistolary correspondent)[2]
Notable students	Friedrich Adolf Trendelenburg
Main interests	Epistemology, ethics
Notable ideas	Elementary philosophy (Elementarphilosophie), principle of consciousness (Satz des Bewußtseins)

Karl Leonhard Reinhold (/ˈraɪnhoʊld/; Austrian German: [ˈraɪnhɔlt]; 26 October 1757 – 10 April 1823) was an Austrian philosopher who helped to popularise the work of Immanuel Kant in the late 18th century. His "elementary philosophy" (Elementarphilosophie) also influenced German idealism, notably Johann Gottlieb Fichte, as a critical system grounded in a fundamental first principle.

He was the father of Ernst Christian Gottlieb Reinhold (1793–1855), also a philosopher.