Jewel in the Palace is a 2003 South Korean historical drama television series directed by Lee Byung-hoon. It first aired on MBC from September 15, 2003, to March 23, 2004, where it was the top program with an average viewership rating of 45.8% and a peak of 57.1%. Produced for US$15 million, it was later exported to 91 countries and has earned US$103.4 million worldwide, being known as one of the primary proponents of the Korean Wave by heightening the spread of Korean culture abroad.

Jo Gwang-jo, also often called by his art name Jeongam (정암), was a Korean Neo-Confucian scholar who pursued radical reforms during the reign of Jungjong of Joseon in the early 16th century.