| Forest Farm Country Park | 55.96 ha | | — |
| Lisvane & Llanishen Reservoirs Welsh Water | 45.87 ha | | — |
| Heath Park | 42.99 ha | | — |
| St Fagans National Museum of History National Museum Wales | 40.73 ha | | — |
| Trelai Park | 35.46 ha | | — |
| Riverside Park | 27.21 ha | | — |
| Bute Park Cardiff Council | 25.19 ha | 🐕 | — |
| Hailey Park | 24.46 ha | | — |
| Hendre Lake Park | 24.34 ha | | — |
| Parc Coed-y-Nant | 23.31 ha | | — |
| Roath Park | 22.59 ha | | — |
| Grangemoor Park | 19.58 ha | | — |
| Sophia Gardens | 18.36 ha | | — |
| Parc Tredelerch | 17.89 ha | | — |
| Parc Cefn Onn | 14.81 ha | | — |
| Fairwater Park | 13.75 ha | | — |
| Howardian Nature Reserve | 12.22 ha | | — |
| Llanishen Park | 12.02 ha | | — |
| Greenway Park | 11.34 ha | | — |
| Cardiff Bay Wetlands Reserve | 10.75 ha | | — |
| Sanatorium Park | 9.02 ha | | — |
| Hamadryad Park | 8.23 ha | | — |
| Victoria Park | 7.8 ha | | — |
| Rhydypenau Park | 7.08 ha | | — |
| Mayflower Park | 6.8 ha | | — |
| Splott Football Park | 6.02 ha | | — |
| Copperfield Park | 5.95 ha | | — |
| Parc Waun Fach | 5.9 ha | | — |
| Roath Botanic Gardens | 5.65 ha | | — |
| Nant Fawr Woodlands | 5.33 ha | | — |
| Thompson's Park | 5.1 ha | | — |
| Westfield Park | 4.46 ha | | — |
| Canal Park | 4.44 ha | | — |
| Roath Pleasure Gardens | 4.3 ha | | — |
| Moorland Park | 3.91 ha | | — |
| Lydstep Park | 3.77 ha | | — |
| Hill Snook Park | 3.72 ha | | — |
| Insole Gardens | 3.68 ha | | — |
| Roath Wild Gardens | 3.48 ha | | — |
| The Harlequins | 3.44 ha | | — |
| Radyr Vale Park | 3.23 ha | | — |
| Butterfield Park | 3.15 ha | | — |
| The Drope West | 3.04 ha | | — |
| Pendragon Park | 2.77 ha | | — |
| Whitchurch Common | 2.66 ha | | — |
| The Drope South | 2.6 ha | | — |
| Coopers Field | 2.49 ha | | — |
| Catherine Gardens | 2.38 ha | | — |
| Alexandra Gardens | 2.35 ha | | — |
| Thornhill Cemetery Memorial Gardens | 2.31 ha | | — |
| The Drope East | 2.3 ha | | — |
| The Fram | 2.19 ha | | — |
| Gabalfa Park | 2.15 ha | | — |
| Riverside Park | 2.14 ha | | — |
| Garth Playing Fields | 2.13 ha | | — |
| Coryton House Garden | 2.04 ha | | — |
| Caerau Lane Park | 1.98 ha | | — |
| Silurian Park | 1.91 ha | | — |
| ABC Park | 1.81 ha | | — |
| Whitchurch Library Gardens | 1.69 ha | | — |
| Roath Mill Gardens | 1.67 ha | | — |
| Rumney Hill Gardens | 1.66 ha | | — |
| Heritage Park | 1.62 ha | | — |
| Linear Park | 1.62 ha | | — |
| Celtic Park | 1.55 ha | | — |
| Hermit Wood Nature Reserve | 1.54 ha | | — |
| Caerleon Park | 1.49 ha | | — |
| Cemaes Park | 1.46 ha | | — |
| Bryn Glas Park | 1.39 ha | | — |
| Ferry Road Park | 1.32 ha | | — |
| Grange Gardens Cardiff Council | 1.29 ha | | — |
| Melrose Park | 1.25 ha | | — |
| The Sandies | 1.25 ha | | — |
| Drovers Way Park | 1.24 ha | | — |
| Maltings Park | 1.19 ha | | — |
| Parc Y Pentre | 1.18 ha | 🐕 | — |
| Maindy Park | 1.12 ha | | — |
| St Fagans Castle Gardens | 1.11 ha | | — |
| Waterloo Gardens | 1.11 ha | | — |
| Orchard Park | 1.1 ha | | — |
| Bellfields Park | 1.09 ha | | — |
| Cyncoed Gardens | 1.04 ha | | — |
| Peppermint Park | 1.01 ha | | — |
| St Ederyn's Play Park Remus | 1.0 ha | 🐕 | — |
| Highfields Park Highfields Management Company | 0.75 ha | 🐕 | — |
| St Mary's Gardens | 0.24 ha | | — |
| Global Gardens | 0.15 ha | | — |
| Saint Fagans Park St Fagans Community Council | 0.06 ha | | — |