In-soo (Korean name)

In-soo, also spelled In-su, is a Korean unisex given name, predominantly male. The meaning of the name differs based on the hanja used to write each syllable. There are 29 hanja with the reading "in" and 67 hanja with the reading "soo" on the South Korean government's official list of hanja which may be used in given names.

People with this name include:
 * Seon of Balhae (birth name Dae Insu; died 830), 10th king of Balhae
 * Pak Paengnyeon (1417–1456), courtesy name Insu, Joseon Dynasty scholar-official
 * Queen Insu (1437–1504), wife of Crown Prince Uigyeong of Joseon
 * Insoo Kim Berg (1934–2007), Korean-born American female psychotherapist
 * Moon In-soo (1945–2021), South Korean male poet
 * Chun In-soo (born 1965), South Korean male archer
 * Insoo Hyun (born c. 1970), American male bioethics professor of Korean descent
 * Lee In-su (born 1973), South Korean male rower
 * Kang In-soo (born 1988), South Korean male singer, member of boy band Myname
 * Yu In-soo (born 1994), South Korean male football midfielder in Japan
 * Yoo In-soo (born 1998), South Korean male actor