
Kim Se-jeong
Acting
Born 1996-08-28 · Gimje, North Jeolla, South Korea
Sejeong (세정) is a South Korean singer-songwriter and actress signed under Jellyfish Entertainment. After coming into prominence as the runner-up on the hit idol competition show “Produce 101,” she debuted in 2016 as a solo artist and member of now-disbanded girl groups I.O.I and Gugudan. In 2017, she was cast in her first leading drama role in KBS’s “School 2017.”
Known for

The Uncanny Counter
2020 · TV

Busted!
2018 · TV

I Wanna Hear Your Song
2019 · TV

K-pop Star
2011 · TV

What Are Gugudan Doing?
2016 · TV

School 2017
2017 · TV

Moon River
2025 · TV

Today's Webtoon
2022 · TV

Business Proposal
2022 · TV

Baek Jong-won's Alley Restaurant
2018 · TV

Brewing Love
2024 · TV

Produce 101
2016 · TV

Galileo: Awakened Universe
2018 · TV

Universe Ticket
2023 · TV

Running Man
2010 · TV

Law of the Jungle
2011 · TV

Salty Tour
2017 · TV

Clean Cam
2020 · TV

Gugudan Project: Extreme School Trip
2016 · TV

Men on a Mission
2015 · TV

You Hee-yeol's Sketchbook
2009 · TV

Amazing Saturday
2018 · TV

Office Romance Recipe
2022 · TV

Big Picture Family
2018 · TV

SNL Korea
2011 · TV

Idol Room
2018 · TV

The Seasons
2023 · TV

MBC Entertainment Awards
2001 · TV

Prison Life of Fools
2019 · TV

Standby I.O.I
2016 · TV

남겨서 뭐하게
2025 · TV

The Sound of Your Heart
2016 · TV

The Uncanny Return
2021 · TV

어서옵SHOW
2016 · TV

마이박스
2018 · TV

Home Alone
2013 · TV

Let's Eat Dinner Together
2016 · TV

IU's Palette
2020 · TV

After School Club
2013 · TV

Master Key
2017 · TV

Sister's Slam Dunk
2016 · TV

Where Is My Home
2019 · TV

Yoobari Talkbari
2025 · TV

Two Yoo Project - Sugar Man
2015 · TV

Hurrah for Independence
2021 · TV

Uh, But Like, Seriously!
2026 · TV

MONSTOP Travel Agency
2023 · TV