Until 2018, the team was known as UR Namur, however as the team faced relegation from the
2017–18 Belgian Third Amateur Division into the
Belgian provincial leagues, the team instead merged with newly promoted
Fosses to form Union Royale Namur Fosses-La-Ville and retain its place in the Belgian Third Amateur Division. In 2021–22, the club renamed to Union Namur promotes to the Second Amateur Division (4th tier of Belgian football). In 2022–23, Union Namur secure promotion to Belgian National Division 1 from 2023–24 season, after finishing runner-up due to
RFC Warnant finishing as Champions of Belgian Division 2 ACFF cause fail obtain a licence to Belgian third tier. == Stadium ==