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Ernst Willibald Emil Hübner (7 July 183421 February 1901) was a German classical scholar.
He was born at Düsseldorf, the son of the historical painter Julius Hübner (1806–1882).
After studying at Berlin and Bonn, he traveled extensively with a view to antiquarian and epigraphical researches. The results of these travels were published in several important works: Inscriptiones Hispaniae Latinae (1869, supplement 1892), Inscriptiones Hispaniae Christianae (1871, supplement 1900); Inscriptiones Britanniae Latinae (1873), Inscriptiones Britanniae Christianae (1876); La Arqueologia de Espana (1888); Monumenta Linguae Ibericae (1893). and Bibliographie der klassischen Alterthumswissenschaft (2nd edition, 1889). He was also author of Römische Epigraphik (2nd edition, 1892); Exempla Scripturae Epigraphicae Latinae (1885); and Römische Herrschaft in Westeuropa (1890).
In 1870 Hübner was appointed professor of classical philology at the University of Berlin,