Botanist and lichenologist (1897–1980).
Oscar Anton Carl Klement (19 April 1897 – 16 February 1980) was a German Bohemian lichenologist. His contributions to lichenology include numerous botanical and zoological classifications, extensive research, and publications. Klement's career spanned multiple disciplines, starting as a clerk and rising to directorship in Mannesmannröhren-Werke. His passion for nature led him to create personal botanical and zoological collections and make substantial contributions to botanical literature from the 1930s onwards. Introduced to lichenology by Josef Anders, Klement compiled a herbarium containing