Lee Joo-bin (born September 18, 1989) is a South Korean actress and model who has risen to prominence through a diverse range of K-dramas. She was a former DSP trainee who nearly debuted with the girl group Rainbow in 2009, but left because she didn't want to be a singer and felt too old for the idol path. She is best known for her roles in Be Melodramatic (2019), Find Me in Your Memory (2020), Doctor Lawyer (2022), Money Heist: Korea (2022), and the massive hit Queen of Tears (2024). Lee took on her first lead role in the 2025 drama The Divorce Insurance, and in 2026 she stars opposite Ahn Bo-hyun in the tvN romantic comedy Spring Fever, playing a small-town teacher named Yoon Bom. Her journey from near-idol to a versatile leading actress highlights her resilience and growing popularity in the industry.