Friedrich Wilhelm Heinrich Theodor Hosemann was a German genre painter, draftsman, illustrator and caricaturist.

Hosemann was the son of an officer in the Prussian Army and moved about frequently until, at the age of twelve, he was apprenticed to the lithography firm of Arnz & Winckelmann in Düsseldorf. Three years later, he was already employed as a draftsman for a salary of 200 Thalers annually. At the same time, he attended the Düsseldorf Art Academy.

In 1828, Winckelmann went into business on his own, later forming a publishing company called Winckelmann and Sons in Berlin. Hosemann went with him as Chief Illustrator for double his previous salary. That year, he provided many drawings for children's books and by 1830 was well known for his humorous drawings. He was soon providing illustrations for several publishers. From 1834 to 1852, he enjoyed a fruitful collaboration with the satirist Adolf Glassbrenner; most notably a series of 32 books entitled Berlin wie es ist und – trinkt (Berlin As It Is and - Drunk).

From 1842 to 1855, he was a member of a literary society called Tunnel über der Spree, where he was known as "Hogarth". In the 1850s, he was also associated with the group Rütli, editing their yearbook and providing engraved illustrations.

In 1857, he was appointed a Professor at the Prussian Academy of Arts and became a full member in 1860. The well-known illustrator and photographer Heinrich Zille was one of his students.

In 1910, a street in the Pankow district of Berlin was named in his honor.