An Okpyeon (옥편, 玉篇) is the Korean name for a hanja dictionary. An okpyeon can range from a small palm-sized book for around 4000 won to a full-sized dictionary.

The original Okpyeon was a dictionary that listed 10,691 graphs, indexed under 542 "radicals." The dictionary was made by King Guye 顧野王 (519~581) of the Chinese Liang 梁 Dynasty in 543 A.D. and then edited by Xiao Kai 簫愷. The Okpyeon dictionary was transmitted and widely used in Korea, and thus the name of this dictionary came to be the general term for a dictionary of Chinese graphs.