Yuko Gibu is a Japanese voice actress born on January 28, 1981, in the town of Yonabaru in Okinawa Prefecture, Japan. She began her career in the voice acting industry in 2004, with her debut role as the child version of the character Ryo in the television anime Love Love?. Over the years, she has been affiliated with several talent management agencies, including AS Planning, Holy Peak, and Genki Project, before transitioning to a freelance career.

Gibu is known for her versatile performances across a wide range of anime television series, original video animations, and films. One of her frequently cited representative roles is Maon Sakurada in the heartwarming iyashikei series Tamayura and its sequels, Tamayura ~Hitotose~ and Tamayura ~More Aggressive~. Another notable and long-running role is Hikari Onozuka in the popular outdoor activity series Encouragement of Climb, appearing in its Second Season and Third Season. In a different vein, she also voiced the character Okami, the landlady, in the supernatural series Kakuriyo -Bed & Breakfast for Spirits-.

Her career also includes a significant number of roles in video game adaptations and long-running franchises. She voiced Kizamaro Saishouin in both the Ryūsei no Rockman (Megaman Star Force) anime and its sequel, Ryūsei no Rockman Tribe. Gibu has been a part of the Utawarerumono franchise, voicing the character Fumirul in the game Utawarerumono: Mask of Truth and later reprising the role for its anime adaptation. Her work in the early 2000s and 2010s includes a diverse array of characters, such as Akira Okudaira in Sweet Blue Flowers, Suzuki in Umi Monogatari, Nozomi Edagawa in Love, Election and Chocolate, and the character Tai in Dogura Magura. She also has numerous credits in the Tamagotchi franchise, including the role of Chamametchi in various series and films.

Beyond these major roles, Gibu's filmography is extensive, featuring many supporting and guest characters in series like Suite PreCure♪, BanG Dream!, and Anne Happy. She has also contributed to original video animations, such as her role as Eri Sakisaka in Iriya no Sora, UFO no Natsu.

A distinctive aspect of Gibu's career is her connection to her Okinawan roots. In recent years, she has been credited with dialect supervision for anime series set in Okinawa, ensuring the authentic use of the local language. Notably, she served as the dialect supervisor and voiced multiple characters, including the fortune teller Satsuki Teruya, in the 2021 series The Aquatope on White Sand. She continued this role for the series Deji Meets Girl and is set to voice a character in the 2025 anime series A Girl & Her Guard Dog, which involves an Okinawan dialect.