Frederik Michael Liebmann (1813 - 1856) was a Danish botanist. Liebmann studied botany at the University of Copenhagen, although he never obtained a formal qualification. He went on study tours of Germany and Norway before becoming lecturer at the Danish Royal Veterinary and Agricultural College in 1837. In 1840 he travelled to Cuba and Mexico; on his return in 1845 he was appointed Professor of Botany at the University of Copenhagen. He became Director of the university's Botanical Garden in 1852, a post he held until his death four years later.
He was the editor of Flora Danica and issued fasc. 41-43 (1845-52) and Supplement vol. 1, a total of 240 plates.