Tatiane Keplmair, also known as Tati Keplmair, is a Brazilian voice actress born in São Paulo on March 31, 1981. She began her career in dubbing at the age of fifteen and has since become one of the most recognized voices in Brazilian anime localization. She is the sister of fellow voice actor Thiago Keplmair, with whom she has worked on several projects.

Keplmair is best known for providing the Brazilian Portuguese voice for iconic anime characters. Her most prominent and long-running role is Nami from the franchise One Piece, a character she has voiced across the main anime series, numerous films including One Piece Stampede and One Piece Film Red, and even the live-action Netflix adaptation. Another signature role is Sakura Haruno from the Naruto series and its related films, such as Naruto Shippūden: The Lost Tower. She is also widely recognized as the voice of Rukia Kuchiki in Bleach.

Her extensive filmography includes a wide array of other significant anime characters. She voices Cheelai in Dragon Ball Super: Broly, Pirika Usui in Shaman King, and Kana in Dino Girl Gauko. Her work also encompasses roles in popular films and series such as Ran Mouri in Case Closed: The Fist of Blue Sapphire, Mina Ashido in My Hero Academia the Movie: Heroes: Rising, Akiko Yosano in Bungo Stray Dogs, Kokomi Teruhashi in The Disastrous Life of Saiki K.: Reawakened, and the character May in the Pokémon anime, including the film Pokémon the Movie: Diancie and the Cocoon of Destruction. Her versatility extends to roles in other animated productions, including Pinkie Pie in My Little Pony: Friendship Is Magic and various characters in live-action dubs, most notably Miley Stewart / Hannah Montana in the Disney Channel series.

Throughout her career, Keplmair has received recognition for her performances. She won the Best Protagonist Voice Actress award at the 2009 Prêmio Yamato for her work as Hannah Montana. In 2023, she was honored with the Best Performance in Brazilian Dubbing award at the Anime Awards Brasil for her portrayal of Nami in One Piece. She has also been a guest at numerous pop culture and anime conventions across Brazil, such as Anime Summit and Comic Con Experience.