| Oak Church Avenue, Kildare Town | €312,775 | 5 |
| Oak Church Avenue, Oak Church | €312,788 | 39 |
| Oak Church Drive, Kildare Town | €352,423 | 6 |
| Oak Church Drive, Oak Church | €339,207 | 19 |
| Oak Church Green, Oak Church | €314,977 | 13 |
| Oak Church Grove, Oak Church | €352,423 | 12 |
| Oak Church Terrace, Oak Church | €343,612 | 11 |
| Oak Church Way, Oak Church | €303,965 | 13 |
| Oak Glade, Blessington Road | €472,500 | 16 |
| Oak Glade, Naas | — | 11 |
| Oak Glade Close, Craddockstown | — | 5 |
| Oak Glade Court, Blessington Rd | — | 6 |
| Oak Glade Hall, Craddockstown | — | 9 |
| Oak Glade Hall, Craddockstown Rd | — | 8 |
| Oak Glade Hall, Naas | — | 8 |
| Oak Glebe, Rathbride Road | — | 17 |
| Oak Grove, Derrinturn | — | 15 |
| Oak Park, Narraghmore | €494,500 | 15 |
| Oak Park Avenue, Oak Park | — | 18 |
| Oak Park Avenue Oak Park, Craddockstown | — | 6 |
| Oak Park Court, Craddockstown | €303,982 | 11 |
| Oak Park Court, Oak Park | €363,300 | 15 |
| Oak Park Drive, Craddockstown | — | 6 |
| Oak Park Drive, Oak Park | — | 23 |
| Oak Park Glen, Oak Park | — | 7 |
| Oak Park Green, Oak Park | — | 21 |
| Oak Park Grove, Craddockstown | €233,311 | 18 |
| Oak Park Grove, Oak Park | €330,396 | 13 |
| Oak Park Place, Craddockstown | — | 5 |
| Oak Park Place, Oak Park | — | 14 |
| Oak Park Square, Oak Park | — | 23 |
| Oak Park View, Craddockstown | €352,423 | 5 |
| Oak Park View, Oak Park | €337,350 | 14 |
| Oak Road, Connell Drive | — | 8 |
| Oak Road, The Friary | — | 7 |
| Oak Way, Ballitore | €312,775 | 11 |
| Oakfield Court, Naas | — | 9 |
| Oakfield Heights, Naas | €347,500 | 31 |
| Oakfield Park, Naas | — | 6 |
| Oakglade Hall, Craddockstown | — | 7 |
| Oakglade Hall, Naas | €234,500 | 7 |
| Oaklawn, Leixlip | €402,000 | 22 |
| Oaklawn close, Leixlip | — | 6 |
| Oaklawn West, Leixlip | €471,251 | 36 |
| Oaklawns, Athy | — | 6 |
| Oaklawns, Kilmeague | — | 8 |
| Oakleigh, Celbridge | — | 6 |
| Oakleigh, Clane Rd | — | 5 |
| Oaktree Avenue, Cunnaberry Hill | — | 18 |
| Oaktree Drive, Cunnaberry Hill | — | 7 |
| Oaktree Green, Cunnaberry Hill | €369,000 | 30 |
| Oaktree Lawn, Cunnaberry Hill | — | 17 |
| Oaktree Park, Cunnaberry Hill | — | 6 |
| Oaktree Road, Cunnaberry Hill | €368,500 | 38 |
| Oakwood Park, Derrinturn | €220,264 | 51 |
| Oatfield Park, Clane | €323,000 | 25 |
| Offaly St, Athy | €165,000 | 8 |
| Oghill, Monasterevin | — | 6 |
| Old Abbey Manor, Great Connell | — | 5 |
| Old Caragh Court, Naas | €360,000 | 19 |
| Old Chapel Grove, Caragh | €579,000 | 13 |
| Old Chapel Wood, Caragh | — | 11 |
| Old Connell, Newbridge | — | 6 |
| Old Connell Weir, Newbridge | €462,500 | 25 |
| Old Connell Weir, Roseberry | — | 7 |
| Old Grange, Monasterevin | €402,500 | 14 |
| Old Greenfield, Maynooth | €376,000 | 28 |
| Old Hill, Leixlip | — | 5 |
| Old Kilcullen, Kilcullen | — | 7 |
| Old Mill Race, Athgarvan | — | 12 |
| Old Mill Race, Monasterevin | — | 6 |
| Old Mill Race, Rathangan Road | — | 7 |
| Old Millrace, Monasterevin | — | 7 |
| Old Millrace, Rathangan Road | — | 5 |
| Oldbridge, Osberstown | €317,500 | 28 |
| Oldbridge Ave, Sallins | — | 5 |
| Oldbridge Park, Naas | — | 7 |
| Oldbridge Park, Oberstown | — | 16 |
| Oldbridge Park, Oldtown Demesne | — | 7 |
| Oldbridge Park, Osberstown | €384,428 | 46 |
| Oldbridge Station, Oberstown | — | 13 |
| Oldbridge Station, Osberstown | €424,500 | 115 |
| Oldbridge Walk, Osberstown | — | 8 |
| Oldtown Close, Sallins Road | — | 5 |
| Oldtown Gardens, Naas | — | 7 |
| Oldtown Green, Naas | — | 14 |
| Oldtown Heights, Naas | — | 7 |
| Oldtown View, Naas | — | 7 |
| Oldtown Walk, Oldtown Demense | — | 8 |
| Oldtown Walk, Oldtown Demesne | €680,000 | 47 |
| Oldtown Woods, Celbridge | €348,018 | 233 |
| Oldwood, Oldtown Demesne | — | 11 |
| Orchard Court, The Orchard | — | 7 |
| Orchard Park, Curragh | — | 8 |
| Orchard Park, Curragh Camp | — | 10 |
| Orchard Park, The Curragh | — | 6 |
| Ormond House, Lyreen Manor | €310,000 | 19 |
| Ornamental Gardens, Oldtown Demesne | €302,500 | 29 |
| Osberstown, Naas | — | 7 |
| Osberstown Cottages, Naas | — | 5 |
| Osberstown Court, Sallins | — | 10 |
| Osberstown Drive, Sallins | €368,000 | 13 |
| Osberstown Park, Sallins | €402,500 | 20 |
| Osberstown View, Sallins | — | 7 |
| Oughterany Village, Branganstown | — | 6 |
| Oughterany Village, Kilcock | €300,000 | 23 |
| Our Lady's Place, Naas | €310,000 | 18 |
| The Oaks, Abbeylands | €212,000 | 9 |
| The Oaks, Ballymany | — | 7 |
| The Oaks, Barnhall Meadows | €392,070 | 18 |
| The Oaks, Meadow Mill | €396,475 | 6 |
| The Oaks, Newbridge | €333,500 | 70 |
| The Oaks, Old Grange Wood | — | 16 |
| The Old Mill Race, Athgarvan | €513,500 | 9 |
| The Old Mill Race, Rathangan Road | — | 9 |
| The Orchard, Coachroad Meadows | €348,017 | 11 |
| The Orchard, Narraghmore | — | 7 |
| The Orchard, Oldtown Demesne | €396,476 | 43 |
| The Orchard, Oldtown Mill | €400,000 | 25 |
| The Orchard, Sallins Road | €368,719 | 37 |