Jaha Koo (he/him) is a South Korean theatre/performance maker, music composer and videographer. His artistic practice oscillates between multimedia and performance, encompassing his own music, video, text, and robotic objects.

His Hamartia Trilogy includes Lolling and Rolling (2015), Cuckoo (2017), and The History of Korean Western Theatre (2020). The trilogy represents a long-term exploration of the political landscape, colonial history and cultural identity of East Asia. Thematically, it focuses on structural issues in Korean society and how the inescapable past tragically affects our lives today. His newest creation Haribo Kimchi premiered in June 2024.

Koo majored in Theatre Studies (BFA, 2011) at Korea National University of Arts and earned a master's degree (MA, 2016) at DAS Theatre in Amsterdam.

In 2026, Jaha Koo made history as the youngest and first Asian recipient of the prestigious International Ibsen Award.