List of SSSIs in West Gwynedd

West Gwynedd AOS

Lists of Sites of Special Scientific Interest in West Gwynedd (1974–1996) comprise:

* List of Sites of Special Scientific Interest in Anglesey
* List of Sites of Special Scientific Interest in Gwynedd

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Protected areas of Wales

* Geography of Wales
* Protected areas of the United Kingdom

National parks|

* Brecon Beacons (Bannau Brycheiniog)
* Snowdonia (Eryri)
* Pembrokeshire Coast National Park

| Proposed|

* Cambrian Mountains
* North East Wales

|

Areas of Outstanding Natural Beauty|

* Anglesey
* Clwydian Range and Dee Valley
* Gower
* Llŷn
* Wye Valley (partly in England)

| Proposed|

* Cambrian Mountains
* Ceiriog Valley and Y Berwyn
* Gower expansion
* Gwent Levels

|

Heritage coasts|

* Glamorgan Heritage Coast

Nature reserves|

* Local nature reserves
* list
* National nature reserves
* list

Site of Special Scientific Interest|

* Lists
* by former counties
* Blaenau Gwent
* Bridgend
* Caerphilly
* Cardiff
* Carmarthenshire
* Ceredigion
* Conwy
* Denbighshire
* Flintshire
* Gwynedd
* Isle of Anglesey
* Merthyr Tydfil
* Monmouthshire
* Neath Port Talbot
* Newport
* Pembrokeshire
* Powys
* Rhondda Cynon Taf
* Swansea
* Torfaen
* Vale of Glamorgan
* Wrexham
* Brecon Beacons NP

European designations (–2020)|

* Special Area of Conservation
* list
* Special Protection Areas
* list

Other designations|

* Cadw properties
* Scheduled monuments
* National Trust properties
* Listed buildings
* Registered historic parks and gardens

* Category

This article includes a geography-related list of lists.
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