| Name | Location |
| Aberbargoed Grasslands | Caerphilly |
| Afon Eden – Cors Goch Trawsfynydd | Gwynedd |
| Afon Gwyrfai a Llyn Cwellyn | Gwynedd |
| Afon Teifi / River Teifi | Carmarthenshire, Ceredigion, Pembrokeshire |
| Afon Tywi / River Tywi | Carmarthenshire |
| Afonydd Cleddau / Cleddau Rivers | Carmarthenshire, Pembrokeshire |
| Alyn Valley Woods / Coedwigoedd Dyffryn Alun | |
| Bae Cemlyn / Cemlyn Bay | |
| Berwyn a Mynyddoedd De Clwyd / Berwyn and South Clwyd Mountains | Denbighshire, Flintshire, Gwynedd, Powys, Wrexham |
| Blackmill Woodlands | |
| Blaen Cynon | Rhondda Cynon Taf |
| Brecon Beacons / Bannau Brycheiniog | Powys |
| Cadair Idris | Gwynedd |
| Caeau Mynydd Mawr | |
| Cardiff Beech Woods | Cardiff, Rhondda Cynon Taf |
| Cardigan Bay / Bae Ceredigion | Ceredigion, Pembrokeshire |
| Carmarthen Bay and Estuaries / Bae Caerfyrddin ac Aberoedd | Carmarthenshire, Pembrokeshire, Swansea |
| Carmarthen Bay Dunes / Twyni Bae Caerfyrddin | Carmarthenshire, Swansea |
| Cernydd Carmel | |
| Clogwyni Pen Llyn / Seacliffs of Lleyn | Gwynedd |
| Coed Cwm Einion | |
| Coed y Cerrig | |
| Coedwigoedd Dyffryn Elwy / Elwy Valley Woods | |
| Coedwigoedd Penrhyn Creuddyn / Creuddyn Peninsula Woods | |
| Coedydd a Cheunant Rheidol / Rheidol Woods and Gorge | |
| Coedydd Aber | Conwy, Gwynedd |
| Coedydd Derw a Safleoedd Ystlumod Meirion / Meirionnydd Oakwoods and Bat Sites | Gwynedd |
| Coedydd Llawr-y-glyn | Powys |
| Coedydd Nedd a Mellte | Neath Port Talbot, Powys, Rhondda Cynon Taf |
| Coetiroedd Cwm Elan / Elan Valley Woodlands | Powys |
| Cors Caron | |
| Cors Fochno | |
| Corsydd Eifionydd | Gwynedd |
| Corsydd Llyn / Lleyn Fens | Gwynedd |
| Corsydd Môn / Anglesey Fens | |
| Crymlyn Bog / Cors Crymlyn | Neath Port Talbot, Swansea |
| Cwm Cadlan | Rhondda Cynon Taf |
| Cwm Clydach Woodlands / Coedydd Cwm Clydach | Blaenau Gwent, Monmouthshire |
| Cwm Doethie – Mynydd Mallaen | |
| Dee Estuary / Aber Dyfrdwy (part in England) | |
| Deeside and Buckley Newt Sites | |
| Drostre Bank | Powys |
| Dunraven Bay | Vale of Glamorgan |
| Elenydd | Ceredigion, Powys |
| Eryri / Snowdonia | Conwy, Gwynedd |
| Fenn's, Whixall, Bettisfield, Wem and Cadney Mosses (part in England) | |
| Glannau Môn: Cors Heli / Anglesey Coast: Saltmarsh | |
| Glannau Ynys Gybi / Holy Island Coast | |
| Glan-traeth | |
| Glaswelltiroedd Cefn Cribwr / Cefn Cribwr Grasslands | |
| Glynllifon | Gwynedd |
| Gower Ash Woods / Coedydd Ynn Gwyr | Swansea |
| Gower Commons / Tiroedd Comin Gwyr | Swansea |
| Granllyn | Powys |
| Great Orme's Head / Pen y Gogarth | Conwy |
| Grogwynion | |
| Gweunydd Blaencleddau | Pembrokeshire |
| Halkyn Mountain / Mynydd Helygain | |
| Johnstown Newt Sites | Wrexham |
| Kenfig / Cynffig | Bridgend, Neath Port Talbot, Vale of Glamorgan |
| Limestone Coast of South West Wales / Arfordir Calchfaen De Orllewin Cymru | Pembrokeshire, Swansea |
| Llangorse Lake / Llyn Syfaddan | Powys |
| Llwyn | |
| Llyn Dinam | |
| Migneint–Arenig–Dduallt | Conwy, Gwynedd |
| Montgomery Canal | Powys |
| Morfa Harlech a Morfa Dyffryn | Gwynedd |
| Mwyngloddiau Fforest Gwydir / Gwydyr Forest Mines | Conwy |
| Mynydd Epynt | Powys |
| North Pembrokeshire Woodlands / Coedydd Gogledd Sir Benfro | Pembrokeshire |
| North West Pembrokeshire Commons / Comins Gogledd Orllewin Sir Benfro | Pembrokeshire |
| Pembrokeshire Bat Sites and Bosherston Lakes / Safleoedd Ystlum Sir Benfro a Llynnoedd Bosherston | Pembrokeshire |
| Pembrokeshire Marine / Sir Benfro Forol | Pembrokeshire |
| Pen Llyn a'r Sarnau / Lleyn Peninsula and the Sarnau | Ceredigion, Gwynedd, Powys |
| Preseli | |
| Rhinog | Gwynedd |
| Rhos Goch | Powys |
| Rhos Llawr-cwrt | |
| Rhos Talglas | |
| River Dee and Bala Lake / Afon Dyfrdwy a Llyn Tegid (part in England) | Denbighshire, Flintshire, Gwynedd, Wrexham |
| River Usk / Afon Wysg | Monmouthsire, Newport, Powys |
| River Wye / Afon Gwy (part in England) | Monmouthshire, Powys |
| St David's / Ty Ddewi | Pembrokeshire |
| Severn Estuary / Mor Hafren (part in England) | Cardiff, Monmouthshire, Newport, Vale of Glamorgan |
| Sugar Loaf Woodlands | |
| Tanat and Vyrnwy Bat Sites / Safleoedd Ystlumod Tanat ac Efyrnwy | Powys |
| Usk Bat Sites / Safleoedd Ystlumod Wysg | Blaenau Gwent, Monmouthshire, Powys |
| Wye Valley and Forest of Dean Bat Sites / Safleoedd Ystlumod Dyffryn Gwy a Fforest y Ddena (part in England) | |
| Wye Valley Woodlands / Coetiroedd Dyffryn Gwy (part in England) | |
| Y Fenai a Bae Conwy / Menai Strait and Conwy Bay | |
| Y Twyni o Abermenai i Aberffraw / Abermenai to Aberffraw Dunes | |
| Yerbeston Tops | Pembrokeshire |
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