List of Sites of Special Scientific Interest in Flintshire
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File:Flintshire UK location map.svg
This is a list of the Sites of Special Scientific Interest (SSSIs) in the Flintshire Area of Search (AoS).{{cite web|title=Find protected areas of land and sea|url=https://naturalresources.wales/guidance-and-advice/environmental-topics/wildlife-and-biodiversity/protected-areas-of-land-and-seas/find-protected-areas-of-land-and-sea/?lang=en|publisher=Natural Resources Wales|access-date=9 January 2022}}
Sites
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- Afon Dyfrdwy (River Dee) SSSI
- Alyn Valley Woods and Alyn Gorge Caves
- Buckley Claypits and Commons
- Caerwys Tufa
- Cefn Meadow
- Cambrian Quarry (Chwarel Cambrian), Gwernymynydd
- Coed Talon Marsh
- Coed Trefraith
- Connah's Quay Ponds and Woodland
- Ddol Uchaf
- Dee Estuary
- Gronant Dunes and Talacre Warren
- Halkyn Common and Holywell Grasslands
- Hendre Bach
- Herward Smithy
- Inner Marsh Farm
- Llandegla Moor (in both Denbighshire and Flintshire)
- Maes y Grug
- Mynydd y Fflint (Flint Mountain)
- Parc Bodlondeb and Gwenallt-parc, Lixwm
- Parc Linden, Lixwm
- Pen-y-Cefn Pasture
- Shotton Lagoons and Reedbeds
- Teilia Quarry
- Tyddyn-y-barcut
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