2023 Loudoun United FC season

Only four players from the previous year's squad (not including those signed to the first team in DC or members of the D.C. United Academy) remained with the team in 2023: Dane Jacomen, Isaac Espinal, Landry Nanan Houssou, and Abdoul Zanne (whose loan from ASEC Mimosas was extended through 2023). All other players who signed with Loudoun in 2022 were recalled by their loaner teams, or were out of contract and signed elsewhere. To make up for the roster shortfall, the team signed a whopping 16 players to different deals to replace the ones who left. From players with experience on other USL teams or reserve sides for MLS teams, to former D.C. United draft picks, to young international stars who showed promise.

With new ownership in place, the team could focus on building a cohesive unit and winning games as opposed to prioritizing the development of players for the first team in D.C. However, D.C. United still held a minority stake in Loudoun, and used the squad to give some of its academy players and reserve squad members some playing time: Jeremy Garay and Gaoussou Samake, who had spent most of their previous years playing with Loudoun even as they were signed to DC, were sent back to Loudoun on season-long loans. In addition, multiple Academy players trained with Loudoun and a handful (including Ethan Pendleton and Xavier O'Neil) were later added to the full roster.

Having new ownership separate from D.C. United allowed Loudoun to participate in the US Open Cup for the first time in their short history. Loudoun entered the second round as the home team against North Carolina FC, and emerged victorious with a 2–1 win in Extra Time. The team managed to draw a home game in the third round as well, with Flower City Union chosen as the visiting side.