Jang Dong-yoon is a South Korean actor. He is best known for his leading roles in the popular television series "School 2017", "A Poem a Day", and "The Tale of Nokdu". In 2015, while attending Hanyang University, Jang was first caught in the media for his bravery. It was reported Jang had come across a robber with a lethal weapon, threatening a convenience store clerk in Seoul's Gwanak District, where he had devised a quick plan to have the culprit arrested. He was recognized with a commendation from the Seoul Metropolitan Police Agency for this act of heroism. This popularity later had led him to receive many casting offers.

张东润（Jang Dong Yoon），1992年7月12日出生于韩国大邱广域市，就读于韩国汉阳大学经济金融系，韩国男演员。

2016年7月，张东润主演励志网络剧《游戏公司的女职员们》，凭借剧中男主熊开发一角正式出道；12月，主演JTBC校园推理剧《所罗门的伪证》。2017年，主演KBS青春校园剧《学校2017》。2018年3月，主演tvN爱情剧《致忘记诗的你》；11月，主演个人首部电影作品《Beautiful Days》上映。2019年，主演KBS古装浪漫喜剧《绿豆传》，凭借该剧获得2019年KBS演技大赏迷你部门男子优秀演技奖。

2020年10月，张东润主演OCN惊悚剧《搜索》。2022年9月，主演动作惊悚片《狼狩猎》。2023年11月，主演Netflix电视剧《精神病房也会迎来清晨》。

장동윤은 대한민국의 배우이다. 배우 데뷔 이력이 특이하다. 장동윤이 한양대학교 경제금융학부에 재학 중이던 2015년, 강도를 잡은 용감한 대학생으로 SBS뉴스에 출연했다. 그 일로 ‘강도 잡은 훈남 대학생’으로 온라인상에서 유명해졌고, 뉴스에 출연한 모습을 보고 연락해온 소속사의 제의를 받아들여 배우로 데뷔하게 됐다.