Tatiane Mayumi Sakemi (born March 22, 1986 in São Caetano do Sul, São Paulo) is a Brazilian swimmer of Japanese ancestry, who specialized in breaststroke events.
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At the 2010 World Military Games at Warendorf, Germany, she won the silver medal in the 50m breaststroke, the 200m breast, 4x100m relay, and bronze in the 100 meter breaststroke.