Tatiane Mayumi Sakemi (born March 22, 1986) is a Brazilian swimmer of Japanese ancestry, who specialized in breaststroke events.

[7][8] In the 100 m breaststroke, Sakemi challenged seven other swimmers on the third heat, including Argentina's Liliana Guiscardo, who beat her from the trials two months earlier.

[9] In the 200 m breaststroke, Sakemi rounded out the first heat in last place and fortieth overall against Lithuania's Raminta Dvariškytė, and Finland's Noora Laukkanen, with a slowest time of 2:39.13.

[10] On the final night of preliminaries, Sakemi teamed up with Fabíola Molina, Tatiana Barbosa, and Gabriella Silva in the women's 4 × 100 m medley relay.

She is also a five-time Brazilian record holder in both long and short course swimming, including two from the Maria Lenk Trophy in Rio de Janeiro.