The year he turned 22, he debuted in tvN’s Prison Playbook as the young version of Jung Kyung-ho’s character. In 2018, he appeared in SBS’s Still 17 and JTBC’s Clean with Passion for Now.
The breakthrough yearThe year he turned 24, he played Go Cheong-myeong in tvN’s Hotel del Luna and became known. Topstar News wrote that two years after his debut he had firmly made his presence felt to the public.
In 2020, he appeared in 18 Again, his first lead role, and also began Netflix’s Sweet Home. In May 2021, he appeared in Youth of May and won best new actor in TV at the Baeksang Arts Awards. In November he appeared in Melancholia as well.
In December 2022, part 1 of Netflix’s The Glory was released, with him as Joo Yeo-jeong. In March 2023, part 2 was released, and in April he appeared in JTBC’s The Good Bad Mother. In August he enlisted in the Air Force band.
In 2024, the film Exhuma opened and passed 10 million admissions on day 32. His screen debut was also his first film to draw 10 million admissions, and he won best new actor at the Baeksang Arts Awards and the Korean Association of Film Critics Awards.
In May 2025, he was discharged, and soon after he won at the Director’s Cut Awards as well. From June he toured eight Asian cities with fan meetings. In November his agency changed its name to YH Entertainment. In 2026, he attended the Prada show in Milan.
Lee Do-hyun (born Apr 11, 1995) debuted in tvN’s Prison Playbook on Nov 22, 2017, the year he turned 22, and became known as Go Cheong-myeong in Hotel del Luna on Jul 13, 2019, the year he turned 24. In 2024, the year he turned 29, he made his screen debut in Exhuma, his first film to draw 10 million admissions.
Ages are by calendar year (the year minus the birth year), birthdays aside.
He debuted playing the high school years of Lee Joon-ho, the character played by Jung Kyung-ho. He appeared as a baseball player who led his school, Gwangju First High School, to victory in the final of the 2005 Golden Lion Flag National High School Baseball Championship.
Source 01 · Maeil Business Newspaper (Korean) · Debut in Prison Playbook · opens in a new tabHe appeared alongside Shin Hye-sun, Yang Se-jong and others, playing the high school student Dong Hae-beom.
Source 02 · Metro (Korean) · Cast in Still 17 confirmed · opens in a new tabSource 03 · Newsworks (Korean) · Dong Hae-beom in Still 17 · opens in a new tabSource 04 · MyDaily (Korean) · Still 17 premiere · opens in a new tabHe played Gil Oh-dol, the younger brother of Gil Oh-sol, played by Kim Yoo-jung.
Source 05 · News Q (Korean) · Cast in Clean with Passion for Now confirmed · opens in a new tabSource 06 · Star News (Korean) · Preview of the Clean with Passion for Now premiere · opens in a new tabSource 07 · Biz Enter (Korean) · Clean with Passion for Now premiere · opens in a new tabHe played the warrior Go Cheong-myeong, who had been entangled with Jang Man-wol (Lee Ji-eun, also known as IU) for 1,300 years. Topstar News wrote that two years after his debut he had firmly made his presence felt to the public.
With Mina of Gugudan, he presented the rookie award category.
Source 14 · Topstar News (Korean) · Presenter at the 2019 MBC Entertainment Awards · opens in a new tabHe received it for Drama Special – Scouting Report.
Source 13 · Maeil Business Newspaper (Korean) · 2019 KBS Drama Awards, one-act drama award · opens in a new tabIn his first lead role, he played a part that moves between the 18-year-old Hong Dae-young and Go Woo-young, who is living his life a second time.
Source 15 · Ilgan Sports (Korean) · 18 Again premiere · opens in a new tabIn the series based on the webtoon of the same name, he played Lee Eun-hyuk, a medical student living in Green Home.
Source 16 · Star News (Korean) · Release date of Sweet Home season 1 · opens in a new tabHe played Hwang Hee-tae alongside Go Min-si, Lee Sang-yi and Geum Sae-rok.
Source 17 · Newsis (Korean) · Youth of May premiere · opens in a new tabHe received it for 18 Again at the 57th Baeksang Arts Awards, held at KINTEX in Goyang, Gyeonggi Province.
Source 18 · Ilgan Sports (Korean) · 2021 Baeksang Arts Awards best new actor in TV · opens in a new tabIn a special project for tvN’s 15th anniversary, set at a private high school that is a hotbed of corruption and favoritism, he played Baek Seung-yoo, appearing with Im Soo-jung.
Source 19 · Newsis (Korean) · Cast in Melancholia · opens in a new tabSource 20 · The Fact (Korean) · Melancholia main poster · opens in a new tabHe played Joo Yeo-jeong, the helper of Moon Dong-eun (Song Hye-kyo), who has sworn revenge.
Source 21 · Edaily (Korean) · Release date of The Glory part 1 · opens in a new tabSource 37 · Sports Kyunghyang (Korean) · Lee Do-hyun in The Glory · opens in a new tabThe second half, in which the revenge begins in earnest, was released.
Source 22 · Financial News (Korean) · Release date of The Glory part 2 · opens in a new tabHe played the prosecutor Choi Kang-ho, the son raised by Jin Young-sun, played by Ra Mi-ran.
Source 23 · Yonhap News Agency (Korean) · The Good Bad Mother episode 1 ratings · opens in a new tabAfter basic military training, he served in the Air Force band.
Source 24 · Yonhap News Agency (Korean) · Lee Do-hyun enlists on Aug. 14 · opens in a new tabSource 32 · Dong-A Ilbo (Korean) · Lee Do-hyun finishes Air Force service · opens in a new tabHe made his screen debut as Bong-gil in director Jang Jae-hyun’s film. It passed 10 million admissions on day 32 of its release and ended with 11.91 million admissions, 14th in the all-time ranking of Korean films.
Source 25 · The Fact (Korean) · Exhuma, box office in its sixth week · opens in a new tabSource 26 · Financial News (Korean) · Exhuma passes 10 million on day 32 · opens in a new tabSource 27 · TV Daily (Korean) · The records of Exhuma · opens in a new tabSource 28 · MHN Sports (Korean) · 2024 Korean film year in review · opens in a new tabHe received it for Exhuma at the 60th Baeksang Arts Awards, held at COEX in Seoul. He attended in uniform because he was in military service.
Source 29 · Edaily (Korean) · 60th Baeksang Arts Awards · opens in a new tabHe appeared again as Lee Eun-hyuk. It is the final season of the Sweet Home series.
Source 30 · Ilgan Sports (Korean) · Sweet Home season 3 released · opens in a new tabSource 38 · Ilgan Sports (Korean) · Lee Do-hyun back in Sweet Home 3 amid his military hiatus · opens in a new tabHe received it for Exhuma at the 44th awards. He could not attend the ceremony because of military service.
Source 31 · Le Monde diplomatique (Korean) · 44th Korean Association of Film Critics Awards · opens in a new tabHe enlisted in August 2023 and finished about 21 months of service.
Source 32 · Dong-A Ilbo (Korean) · Lee Do-hyun finishes Air Force service · opens in a new tabHe received it for Exhuma at the 23rd Director’s Cut Awards, given by the Directors Guild of Korea. It came a week after his discharge.
Source 33 · Newsen (Korean) · Wins at the Director’s Cut Awards · opens in a new tabHe began with a solo fan meeting in Seoul and toured eight Asian cities, including Jakarta, Osaka and Tokyo.
Source 34 · Newsis (Korean) · Asia fan meeting tour · opens in a new tabHis agency, Yuehua Entertainment, changed its name to YH Entertainment.
Source 35 · Star News (Korean) · Agency changes its name · opens in a new tabHe left for Milan to attend the Spring/Summer 2027 womenswear show.
Source 36 · Fashionn (Korean) · Leaves for the Prada Milan fashion show · opens in a new tabEND OF SELECTED RECORDSSelected records, 2017–2026 · not a complete list of work. “Key moment” is an editorial label, not a measure of success.
What did they do, and at what age?
AgeTrail lines up the key moments of a life by age.
Debut and breakthrough are marked separately, and every record has a source.
Film & TV · South Korea
Apr 11, 1995 —
Ages are counted from the birth year 1995: the year of the event minus 1995, birthdays aside. “Key moment” labels and the connecting story are AgeTrail's editorial reading.
Fact-checked: 2026.09.29 · An independent archive, not affiliated with the person or their agency.