Career
After spending time with the youth clubs of Grasshopper Club Zürich and Football Club Dallas, Dunn signed with German club 1. Football Club Köln, where he spent two years. After his release from Köln, Dunn signed with Serbian side OFK Beograd where he spent 18-months, but didn"t make a first-team appearance.
After returning to the United States, Dunn enrolled at the University of Maine at Fort Kent in 2013, where he scored 7 goals in 17 appearances.
Dunn left UMFK to enter the Master of Library Science Waiver Draft and was selected by Chivas United States of America on April 17, 2014. In November 2014, following the contraction of the Chivas United States of America franchise, Dunn was selected by New York City Football Club in the 2014 Master of Library Science Dispersal Draft.
Dunn was waived by New York City on June 24, 2015. Matt Dunn was part of the United States squad at the 2011 Fédération internationale de football association U-17 World Cup.