Jung Hae-kyun
Jung Hae-kyun (정해균) is a South Korean actor best known as Ahn Chi-soo in Signal and from My Mister.

Beyond the screen.
Jung Hae-kyun is a South Korean film and stage actor. Drama fans know him as police chief Ahn Chi-soo in Signal (2016) and from My Mister (2018).
Jung Hae-kyun is 175 cm (5 ft 9 in) tall and weighs 65 kg, according to his published profile.
Early life
Born on August 16, 1968, in Seoul, he studied theatre at Seoul Arts College and spent many years on stage.
Career and breakthrough
He made his film debut in Ghost Taxi in 2000. In Signal, his Ahn Chi-soo stands at the centre of the show's secrets.
Popular roles
In 100 Days My Prince (2018), he plays the warm stepfather of Hong-sim. In Along with the Gods (2017), he is Byeon-seong, the god of the Hell of Murder.
Recent work
He played Oh Han-moo in When Life Gives You Tangerines (2025), and keeps working across stage, film and television.
A career, chapter by chapter.
Selected drama roles
- Signal — Ahn Chi-soo
- 100 Days My Prince — Hong-sim's Stepfather
- My Mister — Director Park
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Stories to find them in.
Selected credits in the Oxfea collection.
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