Yoon Jang-ho (Hangul: 윤장호; Hanja: 尹章豪; September 21, 1980 – February 27, 2007) was a staff sergeant (posthumous) serving as an English translator in Afghanistan as a member of the Task Force Dasan, a dispatched engineering unit of the Republic of Korea Army. He was killed during the suicide bomb attack on a military base in Bagram on February 27, 2007. The attack occurred at the front gate, where he was waiting to greet two local residents into the base. Yoon Jang-ho is the first hostile casualty of the Republic of Korea Armed Forces since the end of Vietnam War.