Collin Martin

D.C. United

On July 10, 2013, it was announced that Martin had signed on as a homegrown player with D.C. United of Major League Soccer, thus becoming the team's sixth homegrown signing. After a short loan spell at the Richmond Kickers in the USL Pro, Martin made his debut for D.C. United on August 3, 2013, against the Montreal Impact in which he came on in the 76th minute for Nick DeLeon as United won the game 3–1. He finished the 2013 season with seven league appearances.

Richmond Kickers (loan)

On July 17, 2013, it was announced that D.C. United had sent Martin out on loan to their USL Pro affiliate, the Richmond Kickers. He made his one and only appearance for the Kickers on July 23 against the Vancouver Whitecaps Reserves in which he started and played 85 minutes as the Kickers won the match 2–1. On September 13, 2014, he scored his first professional goal to open a 2–1 win over the Charleston Battery in the playoff quarter-finals.

Minnesota United

In January 2017, Martin was traded by D.C. to MLS expansion side Minnesota United FC in exchange for a fourth-round pick in the 2018 MLS SuperDraft. He made his debut on March 25 in a 5–2 loss at the New England Revolution, as a 63rd-minute substitute for Mohammed Saeid. Martin played 12 matches in his first season in Minnesota, five as a starter. Having taken no part in the 2019 season, he was loaned in late April to USL Championship team Hartford Athletic. In October 2019, at the end of…

Martin represented the United States at U-14, U-15, U-17, and U-20 levels.

As of matches played on May 16, 2025

Martin was raised in an observant Episcopalian family. On June 29, 2018, Martin came out publicly as gay, making him at the time the only out gay man in any of the big five American sports leagues or any top-division professional men's national soccer leagues. He was also reported at the time to be the only active male professional soccer player to be openly gay. Martin transferred his credits from Wake Forest University to George Washington University after joining D.C. United. He attended part-time for four years, and online for a fifth from Minnesota, before graduating in 2019 with a degree in history.