YooJun-sang (Korean: 유준상; born November 28, 1969) is a South Korean actor and singer. Yoo is best known for starring in the Hong Sang-soo films Ha Ha Ha (2010), The Day He Arrives (2011), and In Another Country (2012).
Seung-jun, also spelled Seung-joon, or Sung-jun, Sung-joon, is a Korean masculine given name. Its meaning differs based on the hanja used to write each syllable of the name.