Justin Dumais (born August 13, 1978, in Oxnard, California) is a former Olympic diver and current commercial airline pilot. He represented the United States in the 2004 Summer Olympics and placed 6th in the 3-meter synchronized spring board with his brother Troy Dumais. Dumais was raised in a family of divers and swimmers, and in 1994 was named Southern Pacific Association Diver of the Year in his class, as were all his siblings.