Seo Ha-joon (서하준) is a South Korean actor. He was born on 19th September 1989 in Seoul, South Korea. Seo Ha-joon is known for Want a Taste? (2019), Phoenix 2020 (2020), The Secret House (2022), Meant to Be (2023), The Two Sisters (2024) and A Woman Who Swallowed the Sun (2025).

He began his acting journey in 2008 with the theatre play Dead Poets Society, marking a strong debut on stage that showcased his passion for performance. Expanding his artistic repertoire, he ventured into music videos in 2012, appearing in “24Billy” by Half a Hundred. The following year, he featured in Jo Kwan-woo’s emotionally charged music video “Fire,” gaining further attention. In addition to acting, he demonstrated his vocal talent by contributing to drama soundtracks.

In 2013, he lent his voice to Princess Aurora’s OST Part 3, performing “I Want to Live” alongside Seo Ha-jun. His musical journey continued in 2015 with the heartfelt track “Goodbye and Hello” for the drama of the same name. Through these diverse roles—on stage, in music videos, and as a vocalist—he has proven his versatility and dedication as a performer, gradually building a multifaceted career in the South Korean entertainment industry.