Otto Richard Bossert (1874–1919) also known as O. R. Bossert was a German portrait painter, art teacher and graphic artist, also known for portrait etchings of historical figures and color woodcuts. Bossert was born in Heidelberg and studied in Karlsruhe, before settling in Leipzig. In 1904 he began teaching at the Leipzig Academy for the Graphic Arts. In 1911 he spent a summer in Normandy and Brittany, where he was introduced to the art of Paul Cézanne. Bossert was a winner of 1914 Villa Romana prize. He died in 1919 in Leipzig.