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For other people known as 'Yoojung', see Yujung.

Yoojung (유정), also known by her full name Choi Yoojung (최유정), is a South Korean rapper, singer-songwriter and actress under Fantagio. She is a former member of the girl group Weki Meki and the project girl group I.O.I and special unit WJMK.

She made her solo debut on September 14, 2022 with the single album "Sunflower".


2016–2017: Produce 101, I.O.I[]

In January 2016, Yoojung appeared as a contestant on the survival show Produce 101 where she represented Fantagio Music. She ranked 3rd place in the finale, thus becoming a member of I.O.I.[1] The group officially debuted on May 4, 2016 with their first mini album Chrysalis.

On January 29, 2017, the group disbanded following the release of their third and final digital single "Downpour".

2017: Debut with Weki Meki[]

On May 1, 2017, Fantagio Music announced that Yoojung, alongside fellow I.O.I member Doyeon, would be debuting in a new girl group together.[2]

On June 3, Yoojung was introduced as the first member of Weki Meki.[3] The group made their debut on August 8 with their first mini album Weme.

2019: V-1[]

On September 13, she became a contestant on the vocal reality survival show V-1. She was eliminated in the first round after losing to her fellow member Suyeon.[4]

2022: Solo debut[]

On August 23, it was announced that Yoojung would make her solo debut sometime in September.[5] On August 26, Fantagio announced that she will release her first single album, "Sunflower", on September 14.[6]

Personal life[]


On October 16, 2019, Fantagio announced that Yoojung would be taking a hiatus due to heath issues.[7]

On February 5, 2020, it was announced that Weki Meki would be returning with the digital single album "Dazzle Dazzle" on February 20. In addition, Yoojung would also be returning from her hiatus.[8]


Single albums[]




  • "Single & Ready to Mingle OST" ("Again and Again" (with Doyeon)) (credited as Weki Meki) (2020)
  • "Cold Blooded Intern OST Part.1" ("Break It Down") (2023)
  • "Dare to Love Me OST Part.2" ("I Hope") (2024)

Producing and writing credits[]

  • All credits adapted from KOMCA, unless stated.[9]
Artist Song Album Type
I.O.I "I.O.I (Intro)" Chrysalis Writing
"Dream Girls"
"Do As I Say" Miss Me?
Weki Meki "Stay with Me" Weme Writing
"Pretty Boy (iTeen Girls Special)"
Weki Meki "Crush" "Kiss, Kicks" Writing
"True Valentine"
Weki Meki "Whatever U Want" "Lock End LOL" Writing
Weki Meki "Just Us" New Rules Writing
Choi Yoojung "Sunflower (P.E.L)" "Sunflower" Writing
"Tip Tip Toes"



  • To Be Continued (Naver TV Cast, 2015)
  • Idol Fever (Naver TV Cast, 2017)
  • Cast: The Golden Age of Insiders (tvN, 2020)
  • Single & Ready to Mingle (KOKTV, 2020)
  • Sound Candy – Your Sound That Fills Me (TVING, 2023)[10]

Reality shows[]

Variety shows[]

  • Blossom with Love (TVING, 2023)[11]

Music video appearances[]

  • ASTRO - "Breathless"
  • Golden Tamborine - "Rise and Fall" (2017)


  • G Market (2016)
  • Baskin Robins (2016)
  • Korean Graphic Novels (2016)
  • Comica (2016)
  • MOVE (2017)
  • Blue Mountain (2017)
  • Lipton Sticks (2017)
  • TikTok (2018)
  • King's Raid Pandemonium (2019)
  • blabla app(2021)
  • Hershey's (2021)
  • Guess Perfume (2022)
  • Crocs Korea (2023)


  • She has trained for 4 years and 3 months, if including Produce 101, then she has trained for 4 years and 7 months.
    • Coincidentally, this is the same amount of time of her fellow I.O.I member, Nayoung.
  • During the production of Produce 101, Yoojung received the nickname "Wink Fairy" due to her excessive winking.
  • She is also known for her various expressions when dancing, for example during the third evaluation on Produce 101, her expressions on stage made her win first place within her group and made the fans give her the nickname "Expression Queen".
  • She was the center for the first evaluation on Produce 101.
  • She was known to have really bad sleeping habits, from sleeping in random places to snoring really loud, her members from I.O.I had a hard time sleeping because of her.
  • When she was a kid, she wanted to be a teacher or a police officer.
  • Her parents run a pork cutlet restaurant.[12]
  • She is well known for being an expert in boygroup dances (she is so good at covering boygroup dances that she is considered one of the best female K-pop idols in this type of dance).[13][14][15]


Main article: Yoojung (Weki Meki)/Gallery


Official links[]