Jo Yoon-su (born July 21, 1998) is a South Korean actress. She is best known for her role in Park Hoon-jung's action-mystery Disney+ original series The Tyrant (2024). After her debut in a web drama by Cheese Films in 2019, she took on minor role in tvN drama True Beauty, followed by supporting roles in dramas such as the Netflix series Juvenile Justice, the tvN drama The Killer's Shopping List, and the JTBC drama The Interest of Love.