| Hangul: | 이재정 |
| Rr: | I Jaejeong |
| Mr: | Ri Chaejŏng |
Lee Jae-joung (born March 1, 1944) was the Unification Minister of South Korea. As head of the Ministry of Unification, Lee is tasked with working toward the reunification of Korea.
Lee assumed the position of Minister for Unification, taking over from Lee Jeong-suk (now a Senior Fellow at the Sejong Institute and Member of the Presidential Advisory Group on the Inter-Korean Summit) in December 2006. The appointment made him the 33rd Minister for Unification, and in the intense prelude to the second inter-Korean Leader's Summit of 2–4 October 2007, the appointment also made him a regular figure in the Korean-language media.