Kim Se-jeong (Korean: 김세정; born August 28, 1996) is a South Korean singer and actress. She finished second in Mnet's girl group survival show Produce 101, becoming a member of the project girl group I.O.I. She was also a member of Jellyfish Entertainment's girl group Gugudan. She is currently active as a solo artist and actress, best known for her lead roles in the television series School 2017 (2017), The Uncanny Counter (2020–2023), Business Proposal (2022), and Brewing Love (2024).

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