An Gyeongjin is a South Korean voice actress who has been active in the industry since 1977. She is a member of the KBS Voice Actor Association, having joined as part of its 15th generation. Her career is characterized by a wide vocal range, allowing her to portray characters of various ages and types, from young girls and boys to adult women and grandmothers. She is particularly noted for her performances as boys with a calm or dark atmosphere, as well as for lively and cute female characters.

One of her most recognized and beloved roles is the title character in the Korean dub of the anime The Angel Girl Nettie, where her bright voice captured the character's strong and lively personality. This performance is often cited as her representative work. Another significant role is Ki-cheol in the series Black Rubber Shoes, a character to whom she has expressed a strong personal attachment. Her voice acting portfolio also includes Ray in Beyblade, a hot-blooded boy, and the Fairy Godmother in the Korean dub of Shrek 2.

In addition to her work in animation, An Gyeongjin has been extensively involved in dubbing foreign films and television dramas for Korean audiences. She also contributes to radio dramas and is a regular narrator for the television program Capturing the Moment This Happens in the World. Her colleagues in the industry include voice actress Kim Jeong-ae, with whom she shares a close friendship and has frequently collaborated on various projects.