Emiliano Dumestre Guaraglia (born February 11, 1987 in Colonia del Sacramento) is a Uruguayan rower. He is a two-time medalist in the men's double and quadruple sculls at the 2010 South American Games in Medellín. Dumestre represented Uruguay at the 2012 Summer Olympics in London, where he and his partner Rodolfo Collazo finished fourth in the C-final, and sixteenth overall in the men's lightweight double sculls, with a time of 6:51.94. Dumestre is a graduate of agricultural studies at Universidad de la Empresa Business School in Montevideo.