Mark Siwat Jumlongkul is a Thai actor, singer, dancer, and model best known for his portrayal of Kengkla in the 2018 drama Love By Chance and its 2020 sequel, A Chance to Love. He is studying in the faculty of social communication at Srinakharinwirot University (SWU). He made his debut as a singer with his first digital single "Sigh" on October 9, 2020. He also owns his own clothing brand named "BLVR." (오뜨랑에서 실시간으로 번역된 한글 프로필도 확인할 수 있어요) 2026년 พนอ 2에서 Macky 역을 맡았다. 2025년 Homeroom 29 ตัวประกัน에서 Copter 역을 맡았다. 2024년 잭 앤 조커 : 넌 내 마음을 훔쳤어에서 Aran 역을 맡았다.