Jeong Dongyeol is a South Korean voice actor who has been active in the industry since the late 1970s. He became a member of the 15th KBS Voice Actor Association in 1977 and began working as a freelancer in 1980.

In the world of anime, Jeong Dongyeol is known for providing the Korean voice for Kouzou Fuyutsuki in the series Neon Genesis Evangelion. His career includes numerous roles in anime dubs produced for the Korean market during the 1990s, particularly for video releases.

His extensive voice credits from this period include the role of Chae Chi-soo in the Daewon video version of Slam Dunk, as well as various characters in Dragon Ball, including Shu, Ginyu, and General Il. He also voiced Kunzite in the video version of Sailor Moon, Jinchang Joo (Soun Tendo) in Ranma 1/2, and the Clock Tower Grandpa in Kiki's Delivery Service. Other notable appearances include roles in Magic Knight Rayearth, Detective Kim Jeon-il (as Yosuke Itsuki), and theatrical films such as Grave of the Fireflies.

Jeong Dongyeol has been noted for his distinctive vocal tone. Critical assessments of his work often highlight that he is particularly well-suited to playing elderly characters and comedic or eccentric figures, such as Dock Q from One Piece or Rose from Crayon Shin-chan. His performances as serious young heroes were sometimes subject to criticism for miscasting, but his work in roles matching his vocal quality, such as villainous or humorous characters, has been received more favorably.