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Marlay Park (Irish: Páirc Mharlaí) is a 86 hectares (210 acres) suburban public park located in Rathfarnham in Dún Laoghaire–Rathdown, Ireland. Lying about nine kilometres (5.5 miles) from Dublin city centre, the parkland comprises woodlands, ponds and walks. Recreational spaces include a nine-hole, par-three golf course (reopened in 2010 after redesign and rebuild), tennis courts, six soccer pitches, five GAA pitches, a cricket pitch, two children's playgrounds and a miniature railway run by the Dublin Society of Model and Experimental Engineers.

Ballinteer St John's (Irish: Naomh Eoin Bhaile an tSaoir ) is a Gaelic Athletic Association club based in Ballinteer, Dún Laoghaire–Rathdown, Ireland. Gaelic football and hurling are played.