Ballybrack (Irish: An Baile Breac, meaning 'the speckled townland') is a residential suburb of Dublin on its Southside, located in the Dún Laoghaire–Rathdown, Ireland. It is south of Killiney and northeast of Loughlinstown. The population of the defined townland is 3,901 according to census 2016 with the actual population closer to 6,000 (incorporating Ashlawn Park, Holly / Cedar Court area and Cromlech Fields).