Name
Image
Location
Established
Area
Manager
Aberbargoed Grasslands
Caerphilly 51°41′10″N 3°12′40″W / 51.686°N 3.211°W / 51.686; -3.211
14 June 2012
42.28 hectares (104.5 acres)
Caerphilly County Borough Council
Allt Rhyd y Groes
Carmarthenshire 52°07′05″N 3°48′43″W / 52.118°N 3.812°W / 52.118; -3.812
24 February 1983
69.71 hectares (172.3 acres)
NRW
Allt y Benglog
Gwynedd 52°47′31″N 3°46′12″W / 52.792°N 3.770°W / 52.792; -3.770
26 April 1994
11.51 hectares (28.4 acres)
NRW
Berwyn
Denbighshire , Gwynedd , Powys 52°49′55″N 3°29′56″W / 52.832°N 3.499°W / 52.832; -3.499
18 March 1999
7,919.76 hectares (19,570.2 acres)
NRW
Cadair Idris
Gwynedd 52°41′38″N 3°53′46″W / 52.694°N 3.896°W / 52.694; -3.896
6 January 1983
436.76 hectares (1,079.3 acres)
NRW
Carmel
Carmarthenshire 51°49′37″N 4°02′28″W / 51.827°N 4.041°W / 51.827; -4.041
24 July 1999
85.19 hectares (210.5 acres)
NRW
Ceunant Cynfal
Gwynedd 52°57′04″N 3°55′37″W / 52.951°N 3.927°W / 52.951; -3.927
26 April 1994
2.73 hectares (6.7 acres)
NRW
Ceunant Llennyrch
Gwynedd 52°55′23″N 3°59′20″W / 52.923°N 3.989°W / 52.923; -3.989
19 March 2018
329.24 hectares (813.6 acres)
NRW
Claerwen
Ceredigion , Powys 52°18′18″N 3°43′01″W / 52.305°N 3.717°W / 52.305; -3.717
21 July 1994
793.40 hectares (1,960.5 acres)
NRW
Coed Camlyn
Gwynedd 52°56′17″N 3°59′35″W / 52.938°N 3.993°W / 52.938; -3.993
3 June 1969
63.57 hectares (157.1 acres)
NRW
Coed Cymerau
Gwynedd 52°57′58″N 3°57′18″W / 52.966°N 3.955°W / 52.966; -3.955
29 August 1992
26.30 hectares (65.0 acres)
NRW
Coed Dolgarrog
Conwy 53°10′59″N 3°50′46″W / 53.183°N 3.846°W / 53.183; -3.846
20 April 1959
67.37 hectares (166.5 acres)
NRW
Coed Ganllwyd
Gwynedd 52°48′00″N 3°53′42″W / 52.800°N 3.895°W / 52.800; -3.895
2 April 1963
23.57 hectares (58.2 acres)
National Trust
Coed Gorswen
Conwy 53°13′12″N 3°51′58″W / 53.220°N 3.866°W / 53.220; -3.866
20 April 1959
13.57 hectares (33.5 acres)
NRW
Coed Rheidol
Ceredigion 52°23′10″N 3°52′16″W / 52.386°N 3.871°W / 52.386; -3.871
7 February 1994
165.91 hectares (410.0 acres)
NRW
Coed Tremadog
Gwynedd 52°56′24″N 4°08′31″W / 52.940°N 4.142°W / 52.940; -4.142
18 April 1958
2.64 hectares (6.5 acres)
NRW
Coed y Cerrig
Monmouthshire 51°53′02″N 3°01′44″W / 51.884°N 3.029°W / 51.884; -3.029
12 February 1988
10.38 hectares (25.6 acres)
NRW
Coed y Rhygen
Gwynedd 52°54′50″N 3°57′54″W / 52.914°N 3.965°W / 52.914; -3.965
3 June 1969
27.78 hectares (68.6 acres)
NRW
Coedmor
Ceredigion , Pembrokeshire 52°03′47″N 4°37′59″W / 52.063°N 4.633°W / 52.063; -4.633
5 July 1991
46.12 hectares (114.0 acres)
NRW
Coedydd Aber
Gwynedd 53°13′05″N 4°00′07″W / 53.218°N 4.002°W / 53.218; -4.002
4 March 1982
166.46 hectares (411.3 acres)
NRW
Coedydd Maentwrog
Gwynedd 52°57′18″N 3°58′59″W / 52.955°N 3.983°W / 52.955; -3.983
26 April 1966
68.32 hectares (168.8 acres)
NRW
Cors Bodeilio
Anglesey 53°16′19″N 4°14′53″W / 53.272°N 4.248°W / 53.272; -4.248
22 Mawrth 2013
41.53 hectares (102.6 acres)
NRW
Cors Caron
Ceredigion 52°15′18″N 3°55′19″W / 52.255°N 3.922°W / 52.255; -3.922
22 January 1981
839.75 hectares (2,075.1 acres)
NRW
Cors Erddreiniog
Anglesey 53°18′43″N 4°17′49″W / 53.312°N 4.297°W / 53.312; -4.297
22 March 2013
250.26 hectares (618.4 acres)
NRW
Cors Geirch
Gwynedd 52°54′14″N 4°30′54″W / 52.904°N 4.515°W / 52.904; -4.515
22 March 2013
122.49 hectares (302.7 acres)
NRW
Cors Goch
Anglesey 53°18′22″N 4°15′22″W / 53.306°N 4.256°W / 53.306; -4.256
15 June 1995
52.72 hectares (130.3 acres)
North Wales Wildlife Trust
Cors Goch Llanllwch
Carmarthenshire 51°50′31″N 4°22′26″W / 51.842°N 4.374°W / 51.842; -4.374
23 July 1996
18.42 hectares (45.5 acres)
Wildlife Trust South and West Wales
Cors Gyfelog
Gwynedd 53°00′25″N 4°17′49″W / 53.007°N 4.297°W / 53.007; -4.297
22 March 2013
36.97 hectares (91.4 acres)
NRW
Cors y Llyn
Powys 52°11′13″N 3°26′28″W / 52.187°N 3.441°W / 52.187; -3.441
27 February 1987
25.12 hectares (62.1 acres)
NRW
Corsydd Llangloffan
Pembrokeshire 51°56′42″N 5°03′00″W / 51.945°N 5.050°W / 51.945; -5.050
5 July 1991
38.93 hectares (96.2 acres)
NRW
Craig Cerrig Gleisiad a Fan Frynych
Powys 51°53′28″N 3°31′05″W / 51.891°N 3.518°W / 51.891; -3.518
1 November 2002
488.38 hectares (1,206.8 acres)
NRW
Craig y Cilau
Powys 51°50′10″N 3°10′41″W / 51.836°N 3.178°W / 51.836; -3.178
23 September 1959
64.82 hectares (160.2 acres)
NRW
Crymlyn Bog & Pant y Sais
Neath Port Talbot , Swansea 51°37′59″N 3°52′59″W / 51.633°N 3.883°W / 51.633; -3.883
27 September 1991
130.83 hectares (323.3 acres)
NRW
Cwm Cadlan
Rhondda Cynon Taf 51°46′26″N 3°30′32″W / 51.774°N 3.509°W / 51.774; -3.509
3 March 2006
32.93 hectares (81.4 acres)
NRW
Cwm Clydach
Blaenau Gwent , Monmouthshire 51°48′18″N 3°08′06″W / 51.805°N 3.135°W / 51.805; -3.135
3 February 2012
30.65 hectares (75.7 acres)
NRW
Cwm Glas Crafnant
Conwy 53°07′12″N 3°53′31″W / 53.120°N 3.892°W / 53.120; -3.892
19 July 1960
15.02 hectares (37.1 acres)
NRW
Cwm Idwal
Conwy , Gwynedd 53°06′40″N 4°01′48″W / 53.111°N 4.030°W / 53.111; -4.030
24 November 1954
403.30 hectares (996.6 acres)
NRW
Dan yr Ogof
Powys 51°49′48″N 3°41′17″W / 51.830°N 3.688°W / 51.830; -3.688
2 April 2004
0.52 hectares (1.3 acres)
The National Showcaves Centre
Dinefwr Park
Carmarthenshire 51°52′44″N 4°00′58″W / 51.879°N 4.016°W / 51.879; -4.016
13 July 2007
224.53 hectares (554.8 acres)
National Trust
Dyfi
Ceredigion , Gwynedd 52°31′44″N 4°00′54″W / 52.529°N 4.015°W / 52.529; -4.015
24 November 1992
2,290.36 hectares (5,659.6 acres)
NRW
Fenn's, Whixall & Bettisfield Mosses
Wrexham , Shropshire 52°55′37″N 2°45′43″W / 52.927°N 2.762°W / 52.927; -2.762
1 May 2021
583.94 hectares (1,442.9 acres)
Natural England
Fiddlers Elbow
Monmouthshire 51°49′16″N 2°41′10″W / 51.821°N 2.686°W / 51.821; -2.686
15 November 2017
28.34 hectares (70.0 acres)
Woodland Trust
Gower Coast
Swansea 51°33′32″N 4°16′52″W / 51.559°N 4.281°W / 51.559; -4.281
6 February 2002
92.17 hectares (227.8 acres)
National Trust
Grassholm Island
Pembrokeshire 51°43′52″N 5°28′44″W / 51.731°N 5.479°W / 51.731; -5.479
23 July 1996
10.77 hectares (26.6 acres)
RSPB
Gregynog
Powys 52°33′58″N 3°21′07″W / 52.566°N 3.352°W / 52.566; -3.352
6 March 2013
214.17 hectares (529.2 acres)
University of Wales
Hafod Elwy Moor
Denbighshire 53°05′38″N 3°34′19″W / 53.094°N 3.572°W / 53.094; -3.572
5 October 1999
82.96 hectares (205.0 acres)
NRW
Hafod Garregog
Gwynedd 52°58′41″N 4°05′02″W / 52.978°N 4.084°W / 52.978; -4.084
15 April 1987
86.70 hectares (214.2 acres)
National Trust
Kenfig Pool and Dunes
Bridgend , Neath Port Talbot 51°31′23″N 3°44′31″W / 51.523°N 3.742°W / 51.523; -3.742
23 May 1989
513.72 hectares (1,269.4 acres)
NRW
Lady Park Wood (EN)
Gloucestershire , Monmouthshire 51°49′37″N 2°39′29″W / 51.827°N 2.658°W / 51.827; -2.658
21 November 1985
37.86 hectares (93.6 acres)
Forestry Commission (England)
Llyn Eiddwen
Ceredigion 52°16′55″N 4°02′38″W / 52.282°N 4.044°W / 52.282; -4.044
23 July 1996
11.53 hectares (28.5 acres)
Wildlife Trust South and West Wales
Maes-y-Facrell, Pen y Gogarth
Conwy 53°19′41″N 3°50′46″W / 53.328°N 3.846°W / 53.328; -3.846
26 February 2009
5.22 hectares (12.9 acres)
NRW
Merthyr Mawr Warren
Bridgend 51°28′48″N 3°38′24″W / 51.480°N 3.640°W / 51.480; -3.640
3 July 2002
324.23 hectares (801.2 acres)
NRW
Morfa Dyffryn
Gwynedd 52°47′56″N 4°08′06″W / 52.799°N 4.135°W / 52.799; -4.135
18 January 1962
197.37 hectares (487.7 acres)
NRW
Morfa Harlech
Gwynedd 52°53′53″N 4°07′19″W / 52.898°N 4.122°W / 52.898; -4.122
9 October 1981
880.73 hectares (2,176.3 acres)
NRW
Nant Irfon
Powys 52°10′23″N 3°41′49″W / 52.173°N 3.697°W / 52.173; -3.697
8 December 1983
137.57 hectares (339.9 acres)
NRW
Newborough Warren & Ynys Llanddwyn
Anglesey 53°09′07″N 4°22′23″W / 53.152°N 4.373°W / 53.152; -4.373
2 December 1992
1,556.43 hectares (3,846.0 acres)
NRW
Newport Wetlands
Newport 51°32′13″N 2°56′28″W / 51.537°N 2.941°W / 51.537; -2.941
16 April 2008
865.72 hectares (2,139.2 acres)
NRW
Ogof Ffynnon Ddu
Powys 51°49′34″N 3°38′35″W / 51.826°N 3.643°W / 51.826; -3.643
1 Mawrh 1993
417.97 hectares (1,032.8 acres)
NRW
Oxwich
Swansea 51°33′58″N 4°09′14″W / 51.566°N 4.154°W / 51.566; -4.154
15 November 2017
228.49 hectares (564.6 acres)
NRW
Pengelli Forest
Pembrokeshire 52°01′08″N 4°43′34″W / 52.019°N 4.726°W / 52.019; -4.726
27 July 1995
65.94 hectares (162.9 acres)
Wildlife Trust South and West Wales
Penhow Woodlands
Monmouthshire , Newport 51°36′25″N 2°50′20″W / 51.607°N 2.839°W / 51.607; -2.839
15 November 1984
24.04 hectares (59.4 acres)
NRW
Ramsey
Pembrokeshire 51°51′54″N 5°20′24″W / 51.865°N 5.340°W / 51.865; -5.340
23 July 1996
281.56 hectares (695.7 acres)
RSPB
Rhinog
Gwynedd 52°50′24″N 3°59′06″W / 52.840°N 3.985°W / 52.840; -3.985
1 December 1970
592.39 hectares (1,463.8 acres)
NRW
Rhos Goch
Powys 52°07′37″N 3°10′30″W / 52.127°N 3.175°W / 52.127; -3.175
27 February 1987
45.21 hectares (111.7 acres)
NRW
Rhos Llawr Cwrt
Ceredigion 52°07′19″N 4°19′08″W / 52.122°N 4.319°W / 52.122; -4.319
24 November 1992
58.73 hectares (145.1 acres)
NRW
Roundton Hill
Powys 52°32′49″N 3°02′31″W / 52.547°N 3.042°W / 52.547; -3.042
31 May 2000
33.45 hectares (82.7 acres)
Montgomeryshire Wildlife Trust
Skokholm
Pembrokeshire 51°41′49″N 5°16′37″W / 51.697°N 5.277°W / 51.697; -5.277
6 December 2008
98.49 hectares (243.4 acres)
Wildlife Trust South and West Wales
Skomer
Pembrokeshire 51°44′10″N 5°17′35″W / 51.736°N 5.293°W / 51.736; -5.293
2 April 1963
306.56 hectares (757.5 acres)
Wildlife Trust South and West Wales
Stackpole
Pembrokeshire 51°36′54″N 4°54′58″W / 51.615°N 4.916°W / 51.615; -4.916
8 March 1995
232.79 hectares (575.2 acres)
NRW and National Trust
Stanner Rocks
Powys 52°13′08″N 3°04′44″W / 52.219°N 3.079°W / 52.219; -3.079
18 February 1981
5.42 hectares (13.4 acres)
NRW
Tŷ Canol
Pembrokeshire 51°59′49″N 4°46′44″W / 51.997°N 4.779°W / 51.997; -4.779
22 September 1986
70.11 hectares (173.2 acres)
NRW
Waun Las
Carmarthenshire 51°50′31″N 4°08′13″W / 51.842°N 4.137°W / 51.842; -4.137
7 August 2008
150.14 hectares (371.0 acres)
National Botanic Garden of Wales
Whiteford
Swansea 51°38′02″N 4°14′35″W / 51.634°N 4.243°W / 51.634; -4.243
26 April 1966
806.05 hectares (1,991.8 acres)
NRW and National Trust
Ynys Enlli
Gwynedd 52°45′32″N 4°47′24″W / 52.759°N 4.790°W / 52.759; -4.790
24 March 1986
178.64 hectares (441.4 acres)
Bardsey Island Trust
Yr Eifl
Gwynedd 52°58′08″N 4°25′52″W / 52.969°N 4.431°W / 52.969; -4.431
22 March 2013
39.25 hectares (97.0 acres)
NRW
Yr Wyddfa
Gwynedd 53°03′29″N 4°02′56″W / 53.058°N 4.049°W / 53.058; -4.049
26 April 1966
1,671.76 hectares (4,131.0 acres)
NRW