Otto Funke (October 27, 1828 - August 17, 1879) was a German physiologist born in Chemnitz.
He studied in Leipzig and Heidelberg, and in 1852 became a lecturer of physiology at the University of Leipzig.
In 1853 he became an associate professor to the medical faculty at Leipzig, and in 1860 a professor of physiology at the University of Freiburg.
One of his better known students at Leipzig was physiologist Karl Ewald Konstantin Hering (1834-1918).
In 1851 Otto Funke was the first scientist to successfully crystallize hemoglobin ((in German): "Hämoglobinkristalle"), which he first called "Blutfarbstoff".
This work was a precursor to Felix Hoppe-Seyler's important studies of hemoglobin.
Funke also performed research of blood formation in the spleen, and investigations into the effects of curare.