Park was a former trainee of SM Entertainment and also former member of SM Rookies. In 2019, she left SM and signed with KeyEast to become an actress. Both of her parents and older sister Park Seung-yeon (also known as Dan-A) are singers.[2][3][4]
^Lee, Seul-gi (September 2, 2022). "박정연, 솔트 엔터와 전속 계약…김정화 박신혜 김선호 한솥밥[공식]" [Park Jung-yeon, an exclusive contract with Salt Entertainment... Kim Jeong-hwa, Park Shin-hye, Kim Seon-ho, One Pot Rice [Official]] (in Korean). Newsen. Archived from the original on September 2, 2022. Retrieved September 2, 2022 – via Naver.
^Lee, Min-ji (September 20, 2024). "'박학기 딸' 박정연, '지옥판사' 출연…박신혜·김재영과 호흡" ['Park Hak-gi's daughter' Park Jung-yeon, to appear in 'Hell's Judge'… Working with Park Shin-hye and Kim Jae-young] (in Korean). Newsen. Retrieved September 25, 2024 – via Naver.
^Jang, Ah-reum (November 8, 2022). "박정연, 웹드 '우린 쓰레기가 아닙니다' 주인공 발탁…청춘 힐링 로맨스 예고" [Park Jung-yeon to star in Webed's 'We're Not Trash'...youthful healing romance teased] (in Korean). News1. Archived from the original on November 8, 2022. Retrieved September 12, 2023 – via Naver.
^Kang Seo-jeong (April 5, 2023). "박정연, '방과 후 전쟁활동' 특별출연..의문의 생존자 첫 등장 '긴장감" [Park Jeong-yeon, special appearance in 'After School War Activities'... first appearance of a mysterious survivor 'tension] (in Korean). OSEN. Archived from the original on April 10, 2023. Retrieved April 10, 2023 – via Naver.