After training for six years, Kim Ro-woon debuted as a member of the South Korean boy group SF9 a.k.a. Sensational Feeling 9 in October 2016. Their debut single album Feeling Sensation peaked at number 6 on the Gaon Album Chart. They were nominated for Best New Male Artist and Artist of the Year at the 2016 Mnet Asian Music Awards. In February 2017, their first extended play Burning Sensation hit the market, peaking at number 3 on the Gaon Album Chart. In January 2020, their debut Korean studio album First Collection was released to commercial success.

Kim Ro-woon made his acting debut with a minor role in the KBS2 series School 2017. In 2018, he played Chae Soo-bin’s close friend who has one-side love for her in the SBS drama Fox Bride Star, which earned him a Best New Actor nomination at the SBS Drama Awards. In 2019, he landed his first leading role in MBC’S Extraordinary You, which won him Best New Actor trophies at the MBC Drama Awards and the 32nd Grimae Awards. In 2021, he starred in JTBC’s Sunbae, Don’t Put on That Lipstick and KBS2’s The King’s Affection, opposite Won Jin-ah and Park Eun-bin, respectively.

Kim Ro-woon’s birth name is Seok-woo, which partly means “to help.” It was given to him by his grandfather, who hoped his grandson would be someone who would help the world. He has an older sister.