Ioanna Gkizas is a Belgian voice actress and dubbing director known for her extensive work in the French-language versions of numerous anime series and films. Her career is characterized by a wide range of roles, often voicing young boys and girls in many popular and long-running franchises.

Gkizas is perhaps best known as the regular French voice of the titular character Conan Edogawa in the long-running anime Detective Conan. This principal role extends to the franchise's feature films, including Detective Conan: The Bride of Halloween, Detective Conan: The Scarlet Bullet, and Detective Conan: The Culprit Hanzawa. Her association with the series has made her a key figure for French-speaking fans of the detective.

Beyond Detective Conan, her filmography includes prominent roles in other major series. She voices Tamama in Sgt. Frog, the title character Mirmo in Mirmo Zibang!, and Carly Carmine in Yu-Gi-Oh! 5D's. She has also had multiple roles across the Yu-Gi-Oh! franchise, including Blair Flannigan and Yubel in Yu-Gi-Oh! GX. Her work in the industry also includes significant contributions to the Naruto and One Piece franchises. In Naruto and Naruto Shippūden, she voices the young boy Inari, among other characters. For the French adaptation of One Piece, she has provided voices for several characters, including Bell-mère and Carrot. Her versatility is further demonstrated by roles in Pokémon, Inazuma Eleven, and as Stephen in the series Kaze no Naka no Shoujo Kinpatsu no Jeanie.

In addition to her on-screen voice work, Ioanna Gkizas also works as a dubbing director, overseeing the French adaptations for various productions. Her credits in this capacity include the series Violetta and Bluey, as well as several OAV projects.