Lee Chang-yeob (Korean: 이창엽; born April 15, 1991), known by his stage name Cha Seo-won (차서원), is a South Korean actor.

His breakthrough role was in The Second Husband (2022), where he won his first acting award.

He has also been a cast member of the variety show I Live Alone since 2022.

Cha enlisted for his mandatory military service as an active-duty soldier on November 22, 2022.

[4] On June 5, 2023, it was announced that Cha's fiancée, actress Uhm Hyun-kyung, is pregnant, and they plan to marry in May of the following year.