Jaynelia Coadou is a French voice actress who began working in dubbing at a young age. She is the daughter of fellow voice actress Fily Keita. Coadou has provided the French voice for a range of characters in animated and live-action productions.

She is known for voicing the lead role of Hayley Travis in the French-language version of the Netflix anime series Pacific Rim: The Black. Her other prominent work in animation includes voicing the title character in the 2024 film Spellbound, known in French as Ellian et le sortilège. She also voiced the principal roles of Riley Andersen in Inside Out 2, Meilin Lee in Turning Red, and Molly in Chicken Run: Dawn of the Nugget for their French dubs. Additionally, she has voiced the character Luna in the animated series Mille bornes challenge.

Beyond animation, Coadou's voice work encompasses dubbing for live-action films and series. Her credits include the French voices of Tsireya in Avatar: The Way of Water, Sarah Miller in The Last of Us, Rose Walker in The Sandman, and young versions of characters in films such as Once Upon a Time in Hollywood, Dumbo, and Respect. She also provides the French voice for the character Faith Newman in the long-running series The Young and the Restless, known in France as Les Feux de l'Amour.

Coadou practices singing, piano, and guitar.