Friedrich Markgraf (1 February 1897 in Berlin-Friedenau – 8 March 1987 in Zurich) was a German botanist.
After secondary school, Markgraf studied biology at the Friedrich Wilhelm University of Berlin. In 1922, he was awarded a Ph.D. for a thesis on the subject of a botanic-ecological study of the Bredower forest near Berlin.
After his habilitation he became first a professor of botany at the Friedrich Wilhelm University of Berlin and then at the Ludwig-Maximilians-Universität München and director of the Botanical Garden Munich-Nymphenburg (1956-1958). Markgraf was also visiting professor of botany at the University of Zurich. During his teaching and research activities, he was primarily concerned with questions of botanical systematics, plant morphology and phytogeography and he also undertook research while travelling in the Mediterranean. In particular, he made an important start on the study of the local flora of Albania. He acted as the Regional Adviser on Albania for Flora Europaea.
He was married to the botanist Ingeborg Markgraf-Dannenberg.