Gong Min-jung began her acting career through short films, with the earliest one being in 2009. She made her theater debut in the 2011 play Rooftop Cat. She then expanded into mainstream acting with small roles in several feature films. She was cast in supporting roles in director Hong Sang-soo’s Yourself and Yours in 2016 and On the Beach at Night in 2017. She also appeared in the top-rating KBS2 family drama My Golden Life. In 2018, she worked with Hong in another movie titled Grass, which premiered at the 68th Berlin International Film Festival. In 2019, she acted alongside Jung Yumi and Gong Yoo in the drama film Kim Ji-young: Born 1982. In 2020, she joined the main cast of the MBC Every1 series Please Don’t Date Him. In 2021, she played Shin Mina’s best friend in the tvN drama Hometown Cha-Cha-Cha.

Gong Min-jung attended Konkuk University’s film department.