Daniel Nguyen (born October 16, 1990) is the first Vietnamese American to play in the US Open tennis tournament. He has won a total of 15 singles and 5 doubles Futures titles and 2 doubles Challenger titles as of December 2019. In the 2009 US Open, he and former teammate JT Sundling were defeated 3–6, 6–2, 6–1 in the first-round of the men's doubles tournament by Máximo González and Juan Mónaco. They qualified after winning the Boy's Junior National Tennis Championship Doubles Title in 2009.