Appian (Lat. Appiamis), a Greek historian of the 2d century, born at Alexandria in Egypt. He removed to Home in the reign of* Trajan, and continued there under Hadrian and Antoninus Pius, lie was by profession an advocate, and at Rome tilled the office of procurator, and had charge of the imperial treasury. He wrote a Roman history in 24 books. Eleven books of this history, together with some fragments, have come down to us. His style is unaffected, and his work, though disfigured by blunders, is highly important as a repertory of information. The best edition of his remains is that of Schweighauser (3 vols. 8vo, Leipsic, 1785).