Jeong Do-jeon (Hangul: 정도전) is a 2014 South Korean television series starring Cho Jae-hyun in the title role as Jeong Do-jeon, a real-life historical figure (1342-1398) who was one of the most powerful scholars and politicians of his time and a close supporter of King Taejo, the founder of the Joseon Dynasty. The period drama shows the crucial role Jeong had in the planning and founding of Joseon and the obstacles he faced in the process, as well as his lasting impact on Joseon's politics and laws. It aired on KBS1 from January 4 to June 29, 2014 on Saturdays and Sundays at 21:40 for 50 episodes.
Jeong Do-jeon received solid ratings and was hailed by critics as one of the most "authentic and realistic" Korean historical dramas in the new millennium. Cho Jae-hyun also won Best TV Actor at the 50th Baeksang Arts Awards in 2014.