Greystones United AFC is a football club located in Greystones, County Wicklow, Ireland. It boasts one of the country's largest number of teams in total throughout all age groups.
2015 saw the merger of Greystones United and town neighbours Greystones A.F.C. The United name was kept and applied to the team competing in the top division of the Leinster Senior League.
The club reached the preliminary round of the 2017 FAI Cup, losing 0-3 at home to Sheriff YC.
Greystones was one of the founding clubs of the Women's Under 17 National League in 2018.
In 2019, Greystones was featured in an episode of BetVictor's Training SOS programme with Liverpool F.C.