Great King Munmu () is an upcoming South Korean historical drama television series written by Kim Ri-heon and Hong Jin-yi, directed by and Koo Sung-joon, and starring Lee Hyun-wook, Jang Hyuk, Park Sung-woong, Kim Kang-woo, Jung Woong-in, and Jo Sung-ha. The series follows the triumphant story of Silla, a small nation that emerged victorious against Goguryeo, Baekje, and the Tang dynasty, ultimately achieving the unification of the three kingdoms. It is scheduled to premiere on KBS2 in November 2026.
, known for his work such as ' (2016âÂÂ2017) and Jang Yeong-sil (2016), was attached to co-direct with Koo Sung-joon, and the screenplay is written by Kim Ri-heon and Hong Jin-yi. Produced by KeyEast and Monster Union, the series consists of 28 episodes and has a production cost of approximately billion. The first script reading was held on September 24, 2025.
In September 2025, Lee Hyun-wook, Jang Hyuk, Park Sung-woong, and Kim Kang-woo were considering. By November 2025, Lee, Jang, Park, Kim, Jung Woong-in and Jo Sung-ha were officially confirmed to lead the series.
Principal photography was initially scheduled to begin in November 2025, but was moved to the next month, with location filming in Mongolia. According to the KBS newsletter on February 9, 2026, the production had already concluded filming in Mongolia and commenced filming in South Korea in late January.
Great King Munmu is scheduled to premiere on KBS2 in the second half of 2026. In February 2026, the series was reportedly slated to air in November 2026.