Lee Do-yun
Birth nameLee Jung-sic
Birth dateJuly 6, 1995 (age 31)
Birth placeSamcheok, Gangwon, South Korea
Other namesLee Jung-sic, Lee Jung-sik
OccupationActor, Model
EducationMyongji University
Years active2016–present
AgentNamoo Actors
Websitenamooactors.com
Lee Jung-shik
Headercolortransparent
Hangul%이정식
Hanja李廷湜

Lee Jung-sic (Korean: 이정식; born July 6, 1995), who began using the stage name Lee Do-yun (Korean: 이도윤) in 2025[1], is a South Korean actor and model. He is best known for his starring roles in the web series I Have Three Boyfriends (2019) and Summer Guys (2021).[2][3][4][5]

Early life and education

He was born on July 6, 1995. After completing his studies from Myongji University, he signed with agency Namoo Actors in 2016. He made his debut in 2016 appearing in My Little Princess song Because Of You which made him noted by the audience.[6]

Career

He did modeling for magazines and comerciales for Kakao Bank, Cosmetic Smoothie and Clothing Brand XESS it gained him more attention.[7] In 2019 he made his debut as actor by starring in four dramas and appearing in DeAid's Changed song. He appeared on Farming Academy by playing a supporting role and in the same year he starred in drama I Have Three Boyfriends which was his first lead role which gained him a lot of more attention.[8][9] He reprise his role of Lee Hae-seung of Farming Academy 2 in 2019. He starred in drama Love with Flaws by playing a supporting of a University student which attracted him attention from the audience.[10][11][12][13]

On September 18, 2025, Lee announced on his personal social media that he would begin using the stage name Lee Do-yun for his acting career.[14][1]

Filmography

Television

YearTitleRoleRef.
2019Farming AcademyLee Hae-seung[15]
I Have Three BoyfriendsGeon Woo[16]
Farming Academy 2Lee Hae-seung[17]
Love with FlawsUniversity Student[18]
2021Summer GuysMa Tae-ho[19]
2022TracerKim Young-tae[20]
Dear.MMoon Joon[21]
Tracer Season 2Kim Young-tae[22]
2025Hyper KnifeHa U-yeong[23]

Web series

YearTitleRoleRef.
2025I Am a Running MateKwak Sang-hyun[24][25][26]

Music video

YearSong titleArtistRef.
2016"Blooming Day"Bloomy
2016"Because of you"Blue Me[27]
2019"Changed"DeAid[28]

References

  1. ^ Lee Yun-bi (October 31, 2025). "'하이퍼나이프' 이정식, '이도윤'으로 활동명 변경 후 '새출발'" ["Lee Jung-sic of 'Hyperknife' Begins a 'New Start' After Changing His Activity Name to 'Lee Do-yun'"] (in Korean). MHN Sports. Retrieved May 5, 2025. – via Naver
  2. ^ News Team (July 3, 2019). "로맨스 추리물 '눈 떠보니 세 명의 남자친구' 오늘 첫 공개" (in Korean). JTBC News. Archived January 28, 2021 at the Wayback Machine. Retrieved September 10, 2019.
  3. ^ "이정식, 잘생김 뿜뿜". News1. September 19, 2019. Archived September 16, 2023 at the Wayback Machine. Retrieved February 11, 2020.
  4. ^ "[사진]'살인 미소' 이정식". OSEN. September 24, 2019. Archived January 28, 2021 at the Wayback Machine. Retrieved February 11, 2020.
  5. ^ "'농부사관학교2→하자들' 이정식, 섬세한 감정 연기로 '2020 열일행보' 기대". OSEN. September 28, 2019. Archived January 28, 2021 at the Wayback Machine. Retrieved February 11, 2020.
  6. ^ "'모델에서 배우로' 이정식, 입덕을 부르는 순수 미소[엑's 영상]". X Sports News. August 22, 2020. Archived September 16, 2023 at the Wayback Machine. Retrieved August 30, 2020.
  7. ^ "'썸머가이즈' 이정신·권현빈·이정식에 임나영·강미나까지". Korean Economy. August 21, 2020. Archived April 12, 2021 at the Wayback Machine. Retrieved August 30, 2020.
  8. ^ "'눈 떠보니 세 명의 남자친구' 이정식, '건우'역 완벽 소화..시선 집중". Seoul Economy. June 2, 2020. Archived June 12, 2020 at the Wayback Machine. Retrieved June 12, 2020.
  9. ^ "이정식, 웹드라마 '눈 떠보니 세 명의 남자친구' 건우 역 완벽 소화". Seoul Economy. June 4, 2020. Archived June 12, 2020 at the Wayback Machine. Retrieved June 12, 2020.
  10. ^ "배우 이정식, SBS 드라마에 이어 JTBC 웹드라마 '눈세남' 캐스팅…승승장구". Korean Economy. June 6, 2020. Archived June 12, 2020 at the Wayback Machine. Retrieved June 12, 2020.
  11. ^ "이정식, JTBC 웹드 '눈 떠보니 세 명의 남자친구'로 차세대 스타 발돋움[핫TV]". OSEN. June 8, 2020. Archived June 12, 2020 at the Wayback Machine. Retrieved June 12, 2020.
  12. ^ "신예 이정식, 웹드라마 '눈 떠보니 세 명의 남자친구' 캐스팅 [공식입장]". X Sports News. June 10, 2020. Archived June 12, 2020 at the Wayback Machine. Retrieved June 12, 2020.
  13. ^ "나무엑터스 신인 이정식, '눈 떠보니 세 명의 남자친구' 캐스팅". Ten Asia. June 11, 2020. Archived June 12, 2020 at the Wayback Machine. Retrieved June 12, 2020.
  14. ^ "Photo posted by leejungsicc on Instagram". Instagram. leejungsicc. September 18, 2025. Retrieved November 18, 2025.
  15. ^ "'농부사관학교2' 윤보미♥이태환, 더 신선하게 돌아온 농대생 로맨스(종합)[Oh!쎈 현장]". OSEN. January 2, 2020. Archived January 28, 2021 at the Wayback Machine. Retrieved February 11, 2020.
  16. ^ "이정식, 농부사관학교2 출연[포토엔HD]". Newsen. January 12, 2020. Archived January 28, 2021 at the Wayback Machine. Retrieved February 11, 2020.
  17. ^ "'케미 UP'‥'농부사관학교2' 이태환X윤보미, 더 깊어진 농대생 로맨스(종합)". Newsen. February 23, 2020. Archived December 13, 2019 at the Wayback Machine. Retrieved February 11, 2020.
  18. ^ "[포토] 드라마 농부사관학교2 대박 느낌 물씬~". Korea Economic Daily. March 2, 2020. Archived January 28, 2021 at the Wayback Machine. Retrieved February 11, 2020.
  19. ^ "이정식, '썸머가이즈' 주연 발탁...여심 사냥 예고". Korean Economy. December 1, 2020. Archived January 28, 2021 at the Wayback Machine. Retrieved December 3, 2020.
  20. ^ Lee Joon-hyun (December 17, 2021). "신예 이정식, '트레이서' 캐스팅 확정…임시완과 호흡 예고" (in Korean). Ten Asia. Archived December 17, 2021 at the Wayback Machine. Retrieved December 17, 2021. – via Naver.
  21. ^ "이정식, '디어엠' 출연…만인의 롤모델 선배로 변신". Sports Donga. December 2, 2020. Archived January 28, 2021 at the Wayback Machine. Retrieved December 3, 2020.
  22. ^ "신예 이정식, 월간 윤종신 신곡 '너의 여행' MV 주인공 활약". Korea Economic TV. February 25, 2022.
  23. ^ "'하이퍼나이프' 이정식, 의사 가운 벗었더니 미모 열일중". Sports Korea. April 2, 2025.
  24. ^ Lee Mi-ji (March 20, 2023). "'기생충' 한진원 작가, '러닝메이트'로 연출 데뷔..내년 티빙 공개(공식)" ['Parasite' writer Han Jin-won makes his directorial debut with 'Running Mate'... Next year's teabing release (official)] (in Korean). Herald POP. Archived March 20, 2023 at the Wayback Machine. Retrieved March 20, 2023. – via Naver.
  25. ^ Lee Yoo-min (March 21, 2023). "이정식 '러닝메이트' 캐스팅 확정[공식]" [Lee Jung-sik 'Running Mate' casting confirmed [Official]] (in Korean). Sports Kyunghyang. Archived March 21, 2023 at the Wayback Machine. Retrieved March 21, 2023.
  26. ^ "신예 이정식, 새 프로필 공개…훈훈한 비주얼". My Daily. September 10, 2024.
  27. ^ "신예 이정식, 디에이드 타이틀곡 '변했어' MV 출연…활약ing". Sports Seoul. March 22, 2020. Archived March 27, 2020 at the Wayback Machine. Retrieved March 27, 2020.
  28. ^ "신예 이정식, 디에이드 '변했어' 뮤직비디오 주연". TV Report. March 25, 2020. Archived from the original on March 27, 2020. Retrieved March 27, 2020.