Johannes Albrecht Bernhard Dorn, also cited as Boris Andreevich Dorn (April 29, 1805 in Scheierfeld, Saxe-Coburg, Germany – May 19, 1881 in St. Petersburg, Russia) was a German orientalist.
Dorn specialized in the history and languages of Iran, Russia, and Afghanistan.
At Leipzig University he was a Private Senior Lecturer. 1827 he became Head of the Department of Oriental Languages at Kharkov University and 1835 Professor of history and geography at the Foreign Ministry Institute of Oriental Languages. He taught Sanskrit and Pashtu at St. Petersburg University. In (1835 he became Corresponding Member of the Russian Academy of Sciences, and 1839 he was Adjunct for Oriental Languages , Extraordinary Member of the Academy in History and Philology in 1852.
He was appointed Director of the Asian Museum in 1842 and Director of the Ethnographic Museum in 1855.