Roh Jae-hyun (Korean: 노재현; Hanja: 盧載鉉; 8 August 1926 – 25 September 2019) was a retired general of the Republic of Korea Army and politician who served as the 21st Minister of National Defense.

During the December 12th Coup d'état, he fled from his position and brought his entire family to the Yongsan Garrison to seek protection from the Americans before being advised to go back to duty.

After reluctantly returning to the army command, he refused to give order of arresting Chun Doo-Hwan or other rebel leaders due to previously receiving their bribe.

Instead, he ordered the arrest of Army Chief of Staff Jeong Seung-hwa to appease the rebels.

In 1988, he resigned as chairman of the Chemical Research Institute and of the Fertilizer Industry Association.