Tatiane Keplermaier, also known as Tati Keplmair, is a Brazilian voice actress born in São Paulo on March 31, 1981. She began her career in voice acting at the age of 13 and has since become one of the most recognized talents in Brazilian dubbing. Her brother, Thiago Keplmair, is also a voice actor, and they have worked together on projects such as the Naruto series.

Keplermaier is particularly well-known for her extensive work in anime, having voiced leading characters in many popular series. One of her most prominent roles is Sakura Haruno in the Naruto franchise, a character she voiced across various films and specials, including Naruto Special: Battle at Hidden Falls. I Am the Hero!. She is also the voice of May in the Pokémon anime, appearing in the series, movies like Pokémon: Jirachi Wish Maker and Pokémon Ranger and the Temple of the Sea, and specials such as Pokémon: The Mastermind of Mirage Pokemon. Another significant role is Ai Enma, the protagonist of Hell Girl, a part she played in both the original series and its sequel, Hell Girl: Two Mirrors.

Her other anime voice credits are extensive and diverse. She voiced Rukia Kuchiki in Bleach, Nami in One Piece, Akane Tendo in Ranma ½, and Ranpha Franboise in the Galaxy Angel series. She also provided voices for Hikari Horaki in Neon Genesis Evangelion, Mia Connery in 009-1, Menori in Mujin Wakusei Survive, Lanfá Franboise in Galaxy Angel A, Mônica Gabriel in Heat Guy J, Julie in Bakugan Battle Brawlers, Alicia in The Golden Laws, Aoi Mishina in Shooting Starlets Musumet, Sylvia in Viewtiful Joe, Mai Moritaka in Hoop Days, Anna in The Laws of the Universe Part 0, Mizuha in Legend of the Millennium Dragon, Mikaze Honjo in Stratos 4 Advance, Maria in Beast Fighter - The Apocalypse, Renée Roberts in Tokyo Mew Mew, Kari in Medabots, and Rey in Genma Wars: Eve of Mythology. In the world of cinema, she voiced Fennel in Pokémon: Black and White, Aki in Yu-Gi-Oh! 3D: Bonds Beyond Time, and Ran Mouri in Lupin III vs. Detective Conan The Movie.

Beyond anime, her voice is widely recognized for her work in live-action series and films. She is the official Brazilian voice for actress Miley Cyrus, dubbing her roles as both Miley Stewart and Hannah Montana in the Disney Channel series, as well as the character Gabriella Montez in the High School Musical films. Her film dubbing credits also include Rose DeWitt Bukater (played by Kate Winslet) for the 3D re-release of Titanic and various roles for actresses like Anna Faris and Neve Campbell.

Throughout her career, Keplermaier has received several awards and nominations recognizing her vocal performances. She won the Prêmio Yamato for Best Protagonist Voice Actress in 2009 for her work as Hannah Montana and received the award for Best Performance in Brazilian Dubbing at the Anime Awards Brasil in 2023 for her role as Nami in One Piece. She has also been nominated for multiple other Prêmio Yamato awards in categories for both protagonist and supporting roles in anime and live-action dubs.