Myung-ok, also spelled Myong-ok, is a Korean given name.
People with this name include:
- Marie Myung-Ok Lee (born 1964), American writer of Korean descent
- Kim Myung-ok (born 1972), South Korean field hockey player
- Yim Myung-ok (born 1986), South Korean volleyball player
- An Myong-ok, North Korean politician
- Sin Myong-ok, North Korean gymnast; see list of Asian Games medalists in gymnastics