Kim Young-ah made her big screen debut with a bit role in the 2010 action-thriller film The Man from Nowhere. Since then, she has been active as a supporting actress on both TV and films. In 2017, she had a guest role in SBS’s Suspicious Partner. The following year, she appeared in a number of TV series including the SBS drama Ms. Ma, Nemesis. In 2019, she joined JTBC’s Be Melodramatic and SBS’s Secret Boutique. In 2020, she became part of the tvN series When My Love blooms and the JTBC drama Was It Love. In 2021, she played a key character in Wavve’s omnibus miniseries Love Scene Number. That same year, she starred alongside Kang Hanna and Choi Yoo-hwa in the web drama Bite Sisters.