United's Under-23 roster, a team comprised of college players throughout the region and coached by academy director Ryan Martin and Under-18/19 head coach Nate Kish, has been announced.
The side, which played the first match of the 2017 season on June 5 against the Richmond Kickers, is made up of 28 players. See the full roster below.
| Name | Position | College |
| Lance DaSilva | Goalkeeper | Longwood |
| Arie Ammann | Goalkeeper | Penn State |
| Eduardo Palacios | Goalkeeper | Stanford |
| Mark Elmore | Defender | James Madison |
| Avionne Flanagan | Defender | South Florida |
| Brennan Ireland | Defender | Penn State |
| Ben Ogedegbe | Defender | George Washington |
| Matt Ledder | Defender | Georgetown |
| Carter Manley | Defender | Duke |
| Cale Thorne | Defender | Clemson |
| Trey Vinson | Defender | UMBC |
| Brandon McDonough | Defender | Georgetown |
| Peter Schropp | Defender | Georgetown |
| Matt Bailey | Midfielder | UMBC |
| Antonio Bustamente | Midfielder | William & Mary |
| Jorge Calix | Midfielder | Maryland |
| Dominic Duncan | Midfielder | |
| Tyler Gabarra | Midfielder | NC State |
| Patrick Jean-Gilles | Midfielder | UMBC |
| Christian Kershaw | Midfielder | Marshall |
| Jorge Quintanilla | Midfielder | West Virginia |
| Davey Mason | Midfielder | Georgetown |
| Suraphael Mbonisi | Midfielder | Howard |
| Jake Rozhansky | Midfielder | Maryland |
| Brandon Williamson | Midfielder | Duke |
| Collin Jouan | Midfielder | |
| Ifunanyachi Achara | Forward | Georgetown |
| Colin Brezniak | Forward | Pittsburgh |
| Eric Matzelevich | Forward | Maryland |
| Tre Pulliam | Forward | UMBC |