Gabriella Machado e Silva (born December 12, 1988 in Rio de Janeiro, Brazil) is a Brazilian butterfly swimmer and Olympian. As of October 2008, she was the South American and Brazilian record holder in the long-course 100-metre butterfly. At the 2007 Pan American Games, in Rio de Janeiro, Gabriella won the bronze medal in the 100-metre butterfly. She also won bronze in the 4×100-metre medley by participate in heats, but, subsequently, this result was impeached due to Rebeca Gusmao's doping.