Heo Nam-jun

Prior to his debut, Heo studied in Sungkyunkwan University and completed a degree in acting.^[1]

Heo debuted in 2019 through the movie Like the First (2019).^[2] His first drama appearance was in OCN drama Missing: The Other Side (2020). Heo would go on to play supporting roles in dramas such as Snowdrop (2021); The Matchmakers (2023); Sweet Home Season 2 and 3 (2023–2024); and The Impossible Heir (2024), as well as movies like Night in Paradise (2020); Double Patty (2021); and I, the Executioner (2024).^[1] He was nominated for the Best New Actor Award by the 2024 APAN Star Awards for his performance in Sweet Home.^[3]

In 2024, Heo portrayed a cold-blooded gangster and murderer named Kim Sang-hyuk – the eldest son of Kim Myung-min's character Kim Kang-heon – in Your Honor, a role which garnered Heo increased public attention.^[4][5][6] During that same year, Heo portrayed Ji Sang-woo, a warm-hearted psychiatrist and YouTuber who specialized in unsolved cases in When the Phone Rings.^[7][8] The drama itself was a commercial success and received positive reviews.^[9] Heo was also awarded the Best New Actor Award from the 2024 MBC Drama Awards for his outstanding performance in the drama.^[10]

Heo was cast in TvN drama When the Stars Gossip (2025), which was first broadcast on January 4, 2025.^[11][12] In 2026, He made a special appearance in the television series Perfect Crown,^[13] and later starred in the SBS TV romantic comedy My Royal Nemesis.^[14]