Jeong Kyeong-doo (Korean: 정경두; born 13 September 1960) is the 46th Minister of National Defense of South Korea.

After his promotion to brigadier general in 2009, he was made Commander of the 1st Fighter Wing in Gwangju Air Base (2009-2011).

[1] Upon the beginning of Moon Jae-in's presidency in 2017, Jeong was appointed as chairman of Joint Chiefs of Staff - the second air force background to assume such post.

The "Republic of Korea Guardian Reserve Forces", a newly formed group of Korean Armed Forces retired generals and reservists led by General Paik Sun-yup, which its members included three former defense ministers, a former chief of the South Korean joint chiefs of staff, and commanders of the navy and marines, oppose the Sept. 19 agreement of President Moon Jae-in due to the engagement with North Korea has gone too far.

The group of retired generals condemned Defense Minister Jeong Kyeong-doo for "pandering to politicians".