Chae Eui-jin is a South Korean voice actress known for her extensive work in dubbing foreign animation and live-action series for Korean television. She began her career in the voice acting industry in 1997 when she joined the Tooniverse Voice Acting Division. In 1999, she moved to the Munhwa Broadcasting Corporation's Voice Acting Division, where she became affiliated with one of South Korea's major broadcasters.

Her career is primarily defined by her voice work in the Korean-language dubs of numerous Japanese anime series. Among her most recognized roles are Tanya Vishneva from Nodame Cantabile: Paris, Lotta Brest in Project Blue Earth SOS, and Kourin in both The Story of Saiunkoku and its second series. She also voiced the character Jin Bora in the popular magical girl series Ojamajo Doremi. In the anime Sentimental Journey, she played the role of Taeko Adachi. Her repertoire extends to the ONA series Ayumayu Theater, where she voiced Ayu Daikuuji.

Beyond these specific credits, Chae Eui-jin has lent her voice to a wide array of other prominent anime series. Her roles include Flay Allster in Mobile Suit Gundam Seed, Anemone in Eureka Seven, Road Camelot in D.Gray-man, and Asuna Kagurazaka in Negima!?. She also voiced characters in series such as Chobits, Dr. Slump, and the film Princess Mononoke. In addition to animation, her voice acting work includes dubbing for live-action television series and films for MBC, as well as narration work and roles in radio dramas. She has also contributed her voice to video games, including the roles of Taeko Adachi in Sentimental Graffiti and Rei Ijuin in Tokimeki Memorial.