(24 December 1837 - 5 June 1887) was a German painter. He mainly painted country scenes in a realistic style.
Von Marees was born in Elberfeld, Germany. At age 16, he was sent to the Berlin Academy. In 1857, he moved to Munich.
In 1869, he visited France, the Netherlands and Spain. He served in the Franco-Prussian War (1870-71) and then lived in Berlin and Dresden for a while. In 1873, he decorated the library walls of the newly built Naples Zoological Institute in Italy. The next year, he moved to Florence.
He died in Rome at the age of 49 and is buried in the Protestant Cemetery there.
