Douglas Lennox-Silva (born April 10, 1987 in Fort Lauderdale, Florida) is a male butterfly swimmer from Puerto Rico, who was born in the United States. He represented Puerto Rico at the 2008 Summer Olympics in Beijing, PR China. He is the younger brother of Kristina Lennox-Silva, who also competed as a swimmer at the 2008 Summer Olympics.
Doug attended Princeton University majoring in anthropology with certificates in American Studies and Latin American Studies.