Jeong Sun-ah (; born October 12, 1984) is a South Korean musical theatre actress. She is best known for starring in the Korean productions of Wicked, Aida, and Chicago.
Early life Jeong was born in Seoul, South Korea, as the eldest of two children. She spent her childhood in Saudi Arabia for 5 years due to her father's occupation as a construction engineer. Her mother was a vocal music major.
Career Jeong became interested in musicals after seeing 42nd Street in her second year of middle school. She took lessons from musical actress Kolleen Park, who suggested to audition for the musical Rent during her third year of high school. She debuted at the age of 18 in Rent (2002) as Mimi Marquez, becoming one of the youngest leading actors at the time.
2022 - present After taking a break from stage due to pregnancy and childbirth, Jeong made her long-awaited comeback with the musical If/Then. If/Then provided her the chance to satiate her longstanding desire to try a piece with more drama. Her performance as Elizabeth Vaughn was widely acclaimed, and she received the Best Actress Award at the 8th Korea Musical Awards.
In 2024, Jeong reprised her association with Wicked by voicing Glinda in the Korean-dubbed release of the film adaptation. The film was released in South Korea on November 20, 2024, and Jeong promoted the opening with a stage greeting event where she performed the Korean version of "Popular" live for audiences. In October 2025, it was announced that she would reprise her role as Glinda in the sequel, Wicked: For Good.
Stage performances Year Title Role2002RentMimi MarquezThe Sound of MusicLiezl von Trapp2003UrinetownLittle SallyMamma Mia!Ensemble/Sophie Cover2004RentMimi MarquezThe Hunchback of Notre DameEsmeralda2005GamblerShowgirl2006Winter SonataOh Chae-rinJekyll and HydeLucy Harris2007Tell Me on a SundayDenise2008NineKarlaXanaduKira2009DreamgirlsDeena JonesI Love You2010Mozart!Constanze WeberAidaAmneris2011Mozart!Constanze WeberGuys and DollsSara BrownEvitaEva Peron2012Gwanghwamun Love StoryYeo-juSong of Two FlowersYulgok PrincessAidaAmneris2013Jesus Christ SuperstarMary MagdaleneWickedGlinda2014DraculaMina MurrayKinky BootsLauren2015Death NoteMisa Amane2016WickedGlindaThe BodyguardRachel Marron2017NapoleonJosephine2018Anna KareninaAnna KareninaThe Man Who LaughsDuchess Josiana2019AidaAmneris2021WickedGlinda2022If/ThenElizabeth Vaughn2023MemphisFelicia FarrellDraculaMina Murray2024ChicagoVelma KellyIf/ThenElizabeth Vaughn2025MemphisFelicia FarrellMoulin Rouge!Satine2026LempickaTamara de LempickaFrozenElsa
Filmography
Films Year Title RoleNote2018Mary Poppins ReturnsMary Poppins (Singing voice)Korean dub2024WickedGlinda (voice)Korean dub 2025Wicked: For Good
Variety Shows Year TitleNote2014Radio StarEpisode 4022016Life BarEpisode 22021King of Mask Singer150th-152nd King (Baby Goat)Romantic Call CenterEpisode 562021–2024Immortal Songs: Singing the LegendEpisode 575, 592, 615, 645, 653
Awards Year Organizations CategoryWork20082nd The Musical AwardsBest Supporting ActressNine20093rd The Musical AwardsBest Supporting ActressDreamgirls20104th The Musical AwardsPopularity AwardMozart!16th Korea Musical Daesang20127th Golden Ticket AwardsBest Musical Actress20137th The Musical AwardsBest ActressAida19th Korea Musical Daesang201510th Golden Ticket AwardsBest Musical Actress20248th Korea Musical AwardsBest ActressIf/Then2024 Brand Customer Loyalty AwardsMusical Actress
References