'''YoonJo SeoYun-seo''' (nama lahir Jo Yoon-Seo; {{lahirmati||4|1|1993}}) adalah seorang aktris asal [[Korea Selatan]].<ref>{{cite web|title=''Tears of Heaven'' confirms Hong Ah-Reum and Seo Joon-Young|url=http://www.hancinema.net/tears-of-heaven-confirms-hong-ah-reum-and-seo-joon-yeong-59193.html|website=[[Hancinema]]|accessdate=2015-10-01|date=12 August 2013}}</ref><ref>{{cite web|title=Yoon Seo to star in ''Love on a Rooftop''|url=http://www.hancinema.net/yoon-seo-to-star-in-love-from-today-79516.html|website=[[Hancinema]]|accessdate=2015-10-01|date=10 March 2015}}</ref>
