Lee Jaeyoon (이재윤) is a South Korean singer and actor. Was born on August 9, 1994, in Nam-gu, Busan, South Korea. He is a member of the boy group SF9 under FNC Entertainment. He’s a lead vocalist and dancer.

In May 2016, he participated in “NEOZ Dance” in FNC Entertainment’s survival show “d.o.b (Dance or Band)”, competing against “NEOZ Band” (later known as HONEYST).

Jaeyoon and the dance team made their debut with their first single album “Feeling Sensation” in October 5, 2016.

He and SF9 became FNC Entertainment’s first dance boy group.

Jaeyoon has cast in some musicals: “Founded” (2021), “Another Miss Oh” (2022). He also acted in web drama acted in a web drama “Click Your Heart” (2016), “Was It Love?” (2020), “Love In Black Hole” (2021).