Seo Bum-june (; born June 27, 1997) is a South Korean actor. He is known for his role as Lee Soo-jae in KBS2 television series It's Beautiful Now (2022), the streaming television series High Cookie (2023) and as a former co-host of SBS music program, Inkigayo.
Seo served his mandatory military service as a social worker at the age of 21 for 2 years.
In June 2025, Seo departed from Hook Entertainment after his contract expired and in August, he signed an exclusive contract with Dareum Entertainment, becoming labelmates with Park Min-young.