Ferdinand Albin Pax (26 July 1858 – 1 March 1942) was a German botanist specializing in spermatophytes. A collaborator of Adolf Engler, he wrote several monographs and described several species of plants and animals from Silesia and the Carpathians. He was a professor at Wrocław University from 1893. His son Ferdinand Albert Pax (1885–1964) was a noted zoologist.