Park Jung-min began his career acting in short films before making his feature film debut in the 2010 coming-of-age drama movie Bleak Night. His performance in the film scored him a Best New Actor nomination at the 20th Buil Film Awards. In 2013, he received another Best New Actor nomination at the 50th Grand Bell Awards for his appearance in the sports drama movie Fists of Legend. His career breakthrough came in 2016 when he was cast in director Lee Jun-ik’s black-and-white biographical period drama film Dongju: The Portrait of a Poet. The movie won him Best New Actor at the 52nd Baeksang Arts Awards and the 37th Blue Dragon Film Awards as well as Best Supporting Actor at the 22nd Chunsa Film Art Awards. In 2018, he starred in another Lee Jun-ik movie called Sunset in My Hometown, which earned him Best Actor at the 19th Busan Film Critics Awards. In 2020, became part of the action movie Deliver Us from Evil, which gave him several Best Supporting Actor trophies.

Aside from acting, Park Jung-min also ventured into writing. In 2014, he became a columnist for Topglass magazine. In 2016, he published the book A Useful Person, which became a best-seller.

Park Jung-min attended the Korea University’s College of Liberal Arts and later the Korea National University of Arts.