Ha Seok-jin was born in Seoul in 1982. Ha Seok-jin, the eldest of one son and one daughter, entered the Department of Mechanical Engineering at Hanyang University after graduating from middle and high school, and after completing his first year, he enlisted in the military. When he returned to school after he was discharged, a friend who was attending another school got a job at an entertainment production, and Ha Seok-jin was offered to apply for recruiting new actors. At first he refused because of his studies, but he dreamed of a new challenge in his boring daily life, and thus made his debut in the entertainment industry through an advertisement for Korean Air in 2005. Initially, he didn't intend to continue pursuing his acting career, but is said to have gradually grown attracted to it and found it to be fun.
In 2021, his contract with C-JeS Entertainment have expired and is currently looking for a new agency to sign with. In July 2021, Ha signed a contract with Management Koo after his contract with the former agency expired. 
^Lee Ho-young (July 20, 2021). "[단독] 배우 하석진, 매니지먼트구와 전속계약" [[Exclusive] Actor Ha Seok-jin, an exclusive contract with Management Goo]. iMBC (in Korean). Naver. Retrieved July 20, 2021.
^Moon Ji-yeon (July 26, 2021). "[공식] 하석진, 매니지먼트 구와 전속계약 체결..이요원 한솥밥" [[Official] Ha Seok-jin signs an exclusive contract with Management Gu... Lee Yo-won Hansotbap]. Sports Chosun (in Korean). Retrieved July 26, 2021 – via Naver.
^Kim Kyung-hee (July 21, 2021). "월간 집' 하석진x박하선, '혼술남녀' 의리로 특별출연!" ['Monthly House' Ha Seok-jin x Park Ha-sun, make a special appearance in 'Honju Man and Woman' Loyalty!]. iMBC (in Korean). Naver. Retrieved July 21, 2021.
^Baek Seung-hoon (November 10, 2021). "옷소매 붉은 끝동' 하석진, 첫 회 특별출연…신스틸러 활약 예고" [The sleeves red finish 'Ha-suk Jin, the first special appearance ... Sinstiller] (in Korean). iMBC. Retrieved November 10, 2021 – via Naver.
^Park Soo-in (January 20, 2022). "OCN 측 "옥택연 하석진 '블라인드' 출연 확정, 정은지 검토중"(공식입장)" [OCN side “Ok Taecyeon and Ha Seok-jin’s ‘Blind’ appearance confirmed, Jung Eun-ji under review” (official position)] (in Korean). Newsen. Retrieved January 20, 2022 – via Naver.
^Kang Da-yun (February 3, 2022). "하석진, 백수에서 판사로 변신…'블라인드' 캐스팅 [공식]" [Ha Seok-jin, transformed from a white beast to a judge... 'Blind' Casting [Official]] (in Korean). My Daily. Retrieved February 3, 2022 – via Naver.
^Hwang Chae-hyun (October 12, 2021). "하석진·고원희·임현주, 웹툰 원작 '백수세끼' 출연 [공식]" [Ha Seok-jin, Go Won-hee, and Lim Hyeon-joo to appear in the webtoon original 'Three Hundreds of Meals' [Official]] (in Korean). Sports Kyunghyang. Retrieved October 12, 2021 – via Naver.
^Bae Hyo-joo (October 5, 2021). "뇌섹남' 하석진, 비자발적 백수 된다‥'백수세끼' 출연 확정[공식]" ['Sexy Brain' Ha Seok-jin, involuntarily becomes blank ... Confirmed to appear in 'Three Meals a Day' [Official]]. Newsen (in Korean). Retrieved October 5, 2021 – via Naver.
^Hyun Jung-min (November 22, 2021). "하석진, EBS SF토크쇼 '공상가들' 지휘 [공식]" [Ha Seok-jin, Conducting EBS SF Talk Show ‘The Dreamers’ [Official]] (in Korean). Sport World. Retrieved November 22, 2021 – via Naver.
^Son Jin-ah (February 8, 2022). "이상민·하석진·배성재·주우재, '로컬식탁' MC 확정" [Lee Sang-min, Ha Seok-jin, Bae Seong-jae, and Joo Woo-jae confirmed as MCs for 'Local Dining Table'] (in Korean). MK Sports. Retrieved February 8, 2022 – via Naver.
^Ahn Tae-hyun (March 15, 2022). "수상한 이웃' 김지석·하석진·이현이, MC 확정…31일 첫방" [Suspicious Neighbor' Kim Ji-seok, Ha Seok-jin, and Lee Hyun-i confirmed as MCs... First episode on the 31st] (in Korean). News1. Retrieved March 15, 2022 – via Naver.
^Ha Kyung-heon (December 21, 2021). "하석진, 취준생 위한 프로그램 MC 변신" [Ha Seok-jin, transformed into a program MC for job-seekers] (in Korean). Sports Kyunghyang. Retrieved December 21, 2021 – via Naver.