Kim In-sung
- Also know as: 김인성
Kim In Sung is a South Korean stage actor. He had a role as 'Young Junichi' in the play 왕복서간 (April 2019), which was a Korean theatrical adaptation of one of the stories in Kanae Minato's 2010 short story collection Ofuku Shokan (往復書簡 / Round Trip Letter).
