Jakob Schlesinger, also Johann Jakob Schlesinger (born 13 January 1792 in Worms; died 12 May 1855 in Berlin) was a German painter and restorer.

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Johann Jacob Schlesinger was born the son of the painter Johann Adam Schlesinger (1759–1829) and his wife Catharina Barbara, née Becker. His father, also a renowned painter, came from Ebertsheim, the mother from Grünstadt. The couple lived for some time in Worms, the birthplace of their son. The family moved to Grünstadt soon after. There, the boy grew up and received his first artistic training possibly from his uncle (his father's brother), Johann Schlesinger (1768–1840), an already regionally known painter.

From 1809 to 1816 Johann Jacob Schlesinger attended the University of Heidelberg and then continued his education in Mannheim and Munich. In the Bavarian capital he started his studies from May 12, 1819 on "historical painting" at the Academy of Fine Arts, Munich.^[1] Because of an eye disease, however, he had to interrupt his studies for three years.

Schlesinger developed a special talent for the restoration of paintings and gained a considerable reputation in this field. In particular, he devoted himself to the old German school. At first, he was working mainly for the brothers Boisserée in Heidelberg. In 1822 he received an appointment as a professor and general restorer at the Royal Museum in Berlin.

Jakob Schlesinger was recognized as a great painter and excellent copyist, with a fondness for art from the 16th century. In 1821 he traveled to Dresden and reproduced Raphael's Sistine Madonna for the Speyer Cathedral. In 1834 he lithographed, for the Karlsruhe Art Club the heads of Saint Barbara and the Pope, separately. He is also known for landscape portraits and pictures of fruit and flowers, though in academic cool manner, but very thoroughly elaborated. In addition to painting, Schlesinger worked as a lithographer.

His most famous current painting is the portrait of Hegel in his last year of life (1831), which has been widely reproduced.

Annik Pietsch's book, Weder Haut noch Fleisch: Das Inkarnat in der Kunstgeschichte (Neither skin nor flesh: The flesh tones in the history of art) contains a detailed discussion on the Hegel portrait.^[2]

• Viktor Carl: Lexikon Pfälzer Persönlichkeiten. 3. (Encyclopedia of Palatine personalities, third edition). Hennig, Edenkoben 2004, ISBN 3-9804668-5-X.
• Walter Lampert: 1100 Jahre Grünstadt. Ein Heimatbuch (1100 years of Grünstadt. Monography). City council of Grünstadt, Grünstadt 1975, page. 383/384.
• Franz Müller, Karl Klunzinger, Adolf Seubert: Schlesinger, Jakob. Die Künstler aller Zeiten und Völker. Band 3. (The artists of all times and peoples. Volume 3.) Ebner and Seubert, Stuttgart 1864, page 463.
• Irmgard Wirth: Berliner Malerei im 19. Jahrhundert (Berlin painting in the 19th century). Siedler, Berlin 1990, ISBN 3-572-10011-9, S. 154.