Kim Min-seo (; born April 18, 2009) is a South Korean teenage actress and model. Kim is known for her roles in the drama series Hometown Cha-Cha-Cha (2021) and family drama Young Lady and Gentleman (2021), as well as her appearance in the first season of SBS drama The First Responders, where she garnered Best Young Actress Award at the 2022 SBS Drama Awards.
In addition to her acting career, Kim is actively involved as a model in various advertisements. She has also gained recognition as one of the cast members of ODG, a South Korean kids' YouTube Channel.
Kim began her career as a child fashion model in commercials. At the age of 8, she joined an acting academy and made her debut in a minor role in the short film Polaroid (2017). On August 26, 2017, she successfully auditioned for a short film produced by JTBC All Spectators. She was cast as Min-ju in the short film Spiderman (2017), directed by award-winning director Park Kwang-hyun.
In 2019, Kim landed her next role in the independent film Maggie, by director Lee Ok-seop and screenwriter Koo Kyo-hwan. She portrayed the young version of Moon So-ri's character, Lee Kyeong-jin. She also appeared in her first commercial film, a historical comedy titled , directed by Kim Joo-Ho. In the same year, Kim also joined as cast member of ODG, a children South Korean YouTube Channel by Studio Solfa.
In 2019, Kim started auditioning for television roles and secured a minor role in the OCN drama Save Me 2 (2019). In 2020, she appeared in minor roles in three dramas, Hospital Playlist (2020), ' (2020) and Delayed Justice (2020). ODG supported her career with content titled "Kid Actress to Her Career," which showcased Kim's reflections on her journey as a child actress. On April 2, 2021, the channel released a video titled "Kid tries not to recognize her favorite K-pop star," featuring Kim and her favorite K-pop singer and actress, IU. Kim re-enacted a scene performed by IU in the drama My Mister and explained to IU how it helped her career as an actress.
Kim's first major supporting role on television was in the 2021 tvN drama series Hometown Cha-Cha-Cha. She portrayed Oh Ju-ri, a fourteen-year-old girl and the only daughter of widower Oh Chun-jae, a cafe owner in Gongjin. Her character's passion for the fictional idol group DOS in the drama allowed Kim to showcase her singing and acting. Due to the popularity of her role as Oh Ju-ri, Kim was appointed as the public relations ambassador for the 2nd Gimpo Youth Film Festival for three years. She was also invited to host of The 11th Gaon Chart Music Awards alongside actor Jo Han-chul, who played her father in the drama.
That same year, Kim appeared in the KBS2 weekend family drama Young Lady and Gentleman opposite Ji Hyun-woo. In this drama, she portrayed the younger version of Park Dan-dan, with Lee Se-hee playing the character as an adult. Kim also acted opposite Kim Kang-woo as his daughter in the omnibus feature film New Year Blues.
In 2022, Kim made notable appearances on television. In KBS2 miniseries Café Minamdang, Kim portrayed the young version of Han Jae-hui, a role later played by Oh Yeon-seo as adult. Later, Kim landed her first lead role as archer Eun-ho in the Korean adaptation of Fair Training, which was part of EBS Omnibus Drama Beast of Asia Season 2. Furthermore, Kim showcased her acting skills in the KT Genie drama series ', where she portrayed Kim Ji-hyun, involved in a love triangle with characters played by Jeong Dong-won and Kim Ji-young. The drama gained significant attention after its airing on cable channel ENA and became popular on Netflix Korea. Moreover, Kim appeared in the second episode of the first season of the SBS drama series The First Responders as middle school student Kim Hyeon-seo. Her performances earned her the title of Best Young Actress at 2022 SBS Drama Awards.