Ryu Gwan-sun (December 16, 1902 – September 28, 1920), also known as Yu Gwansun, was an organizer in what would come to be known as the March 1st Movement against Imperial Japanese colonial rule of Korea in South Chungcheong.
The March 1st Movement was considered a peaceful demonstration by the Korean people against Japanese rule.
Ryu Gwan-sun became one of the most well-known participants in this movement, and eventually, a symbol of Korea's fight for independence.