| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Y Bala | city | Gwynedd | United Kingdom | 52.92 | -3.60 | 830 | 3068 |
| Y Barri | city | Bro Morgannwg | United Kingdom | 51.41 | -3.27 | 26 | 20292 |
| Y Bermo | city | Gwynedd | United Kingdom | 52.75 | -4.07 | 889 | 2204 |
| Y Bont-faen | city | Bro Morgannwg | United Kingdom | 51.46 | -3.44 | 203 | 32294 |
| Y Borth | city | Ceredigion | United Kingdom | 52.48 | -4.05 | 242 | 5281 |
| Y Cei Newydd | city | Ceredigion | United Kingdom | 52.22 | -4.37 | 223 | 1025 |
| Y Clas-ar-Wy | city | Powys | United Kingdom | 52.03 | -3.20 | 830 | 1490 |
| Y Coed Duon | city | Caerffili | United Kingdom | 51.67 | -3.21 | 830 | 49288 |
| Y Crwys | city | Swansea | United Kingdom | 51.63 | -4.07 | 282 | 51172 |
| Y Drenewydd | city | Powys | United Kingdom | 52.52 | -3.30 | 830 | 1490 |
| Y Farteg | city | Torfaen | United Kingdom | 51.75 | -3.07 | 1043 | 40373 |
| Y Felinheli | city | Gwynedd | United Kingdom | 53.18 | -4.20 | 269 | 9296 |
| Y Felinheli / Port Dinorwic | city | Gwynedd | United Kingdom | 53.18 | -4.20 | 269 | 9296 |
| Y Fenni | city | Sir Fynwy | United Kingdom | 51.83 | -3.02 | 278 | 2691 |
| Y Fflint | city | Flintshire | United Kingdom | 53.27 | -3.17 | 59 | 33251 |
| Y Grysmwnt | city | Sir Fynwy | United Kingdom | 51.92 | -2.87 | 830 | 3593 |
| Y Mwynglawdd | city | Wrexham | United Kingdom | 53.05 | -3.10 | 1076 | 22566 |
| Y Porth | city | Rhondda Cynon Taf | United Kingdom | 51.61 | -3.40 | 406 | 47166 |
| Y Pîl | city | Bridgend | United Kingdom | 51.52 | -3.70 | 249 | 32035 |
| Y Rhath | city | Cardiff | United Kingdom | 51.49 | -3.15 | 3 | 141531 |
| Y Rhiw | city | Gwynedd | United Kingdom | 52.82 | -4.63 | 0 | 1909 |
| Y Rhondda | city | Rhondda Cynon Taf | United Kingdom | 51.65 | -3.48 | 853 | 46641 |
| Y Rhws | city | Bro Morgannwg | United Kingdom | 51.39 | -3.35 | 3 | 17385 |
| Y Rhyl | city | Sir Ddinbych | United Kingdom | 53.32 | -3.50 | 203 | 8120 |
| Y Sgwar | city | Sir Benfro | United Kingdom | 51.94 | -5.13 | 314 | 3406 |
| Y Sili | city | Bro Morgannwg | United Kingdom | 51.41 | -3.22 | 0 | 18508 |
| Y Trallwng | city | Powys | United Kingdom | 52.67 | -3.13 | 246 | 1491 |
| Y Waun | city | Wrexham | United Kingdom | 52.94 | -3.07 | 396 | 21075 |
| Y Wig | city | Bro Morgannwg | United Kingdom | 51.44 | -3.55 | 272 | 14576 |
| YEO (YEOVILTON) | airport | United Kingdom | 51.01 | -2.64 | 75 | 0 | |
| YEOVILTON | airport | United Kingdom | 51.01 | -2.64 | 75 | 0 | |
| Yafforth | city | North Yorkshire | United Kingdom | 54.35 | -1.47 | 157 | 9456 |
| Yalding | city | Kent | United Kingdom | 51.22 | 0.43 | 137 | 24080 |
| Yanworth | city | Gloucestershire | United Kingdom | 51.82 | -1.88 | 830 | 5066 |
| Yapton | city | West Sussex | United Kingdom | 50.80 | -0.60 | 0 | 38634 |
| Yarburgh | city | Lincolnshire | United Kingdom | 53.40 | 0.03 | 108 | 11026 |
| Yarcombe | city | Devon | United Kingdom | 50.87 | -3.07 | 830 | 6223 |
| Yardley | city | Birmingham | United Kingdom | 52.47 | -1.82 | 364 | 260622 |
| Yardley Hastings | city | Northamptonshire | United Kingdom | 52.20 | -0.73 | 255 | 11016 |
| Yarlington | city | Somerset | United Kingdom | 51.05 | -2.48 | 318 | 10726 |
| Yarm | city | Stockton-on-Tees | United Kingdom | 54.50 | -1.35 | 101 | 54229 |
| Yarm on Tees | city | Stockton-on-Tees | United Kingdom | 54.50 | -1.35 | 101 | 54229 |
| Yarmouth | city | Isle of Wight | United Kingdom | 50.70 | -1.50 | 68 | 7136 |
| Yarmouth | city | Norfolk | United Kingdom | 52.63 | 1.75 | 0 | 15415 |
| Yarmouth på Isle of Wight | city | Isle of Wight | United Kingdom | 50.70 | -1.50 | 68 | 7136 |
| Yarnton | city | Oxfordshire | United Kingdom | 51.80 | -1.30 | 219 | 76259 |
| Yarpole | city | Herefordshire | United Kingdom | 52.28 | -2.78 | 387 | 4461 |
| Yarrow | city | The Scottish Borders | United Kingdom | 55.52 | -3.05 | 1669 | 1639 |
| Yate | city | South Gloucestershire | United Kingdom | 51.54 | -2.41 | 291 | 46417 |
| Yatesbury | city | Wiltshire | United Kingdom | 51.43 | -1.90 | 830 | 6219 |
| Yatsbury | city | Wiltshire | United Kingdom | 51.43 | -1.90 | 830 | 6219 |
| Yatton | city | Herefordshire | United Kingdom | 51.97 | -2.53 | 249 | 4915 |
| Yatton | city | North Somerset | United Kingdom | 51.38 | -2.82 | 137 | 14619 |
| Yatton Keynell | city | Wiltshire | United Kingdom | 51.49 | -2.19 | 308 | 13748 |
| Yaxham | city | Norfolk | United Kingdom | 52.65 | 0.97 | 167 | 6399 |
| Yaxley | city | Cambridgeshire | United Kingdom | 52.50 | -0.25 | 108 | 28661 |
| Yaxley | city | Suffolk | United Kingdom | 52.32 | 1.12 | 157 | 6587 |
| Yazor | city | Herefordshire | United Kingdom | 52.12 | -2.87 | 830 | 4470 |
| Yeadon | city | Leeds | United Kingdom | 53.87 | -1.67 | 830 | 103640 |
| Yeadon i West Yorkshire | city | Leeds | United Kingdom | 53.87 | -1.67 | 830 | 103640 |
| Yealmpton | city | Devon | United Kingdom | 50.35 | -3.98 | 262 | 5957 |
| Yearby | city | Redcar and Cleveland | United Kingdom | 54.58 | -1.08 | 239 | 43102 |
| Yeaveley | city | Derbyshire | United Kingdom | 52.95 | -1.72 | 396 | 5916 |
| Yedingham | city | North Yorkshire | United Kingdom | 54.20 | -0.62 | 154 | 3370 |
| Yelden | city | Bedford | United Kingdom | 52.28 | -0.50 | 249 | 14716 |
| Yeldham | city | Essex | United Kingdom | 52.02 | 0.57 | 242 | 12412 |
| Yelford | city | Oxfordshire | United Kingdom | 51.73 | -1.48 | 239 | 11459 |
| Yelling | city | Cambridgeshire | United Kingdom | 52.23 | -0.15 | 183 | 8290 |
| Yelvertoft | city | Northamptonshire | United Kingdom | 52.37 | -1.12 | 830 | 11645 |
| Yelverton | city | Norfolk | United Kingdom | 52.57 | 1.37 | 36 | 15126 |
| Yelverton | city | Devon | United Kingdom | 50.48 | -4.08 | 830 | 21072 |
| Yeoford | city | Devon | United Kingdom | 50.77 | -3.72 | 308 | 4720 |
| Yeovil | city | Somerset | United Kingdom | 50.95 | -2.63 | 223 | 24813 |
| Yeovilton | city | Somerset | United Kingdom | 51.00 | -2.65 | 170 | 15913 |
| Yerbeston | city | Sir Benfro | United Kingdom | 51.75 | -4.80 | 62 | 4619 |
| Yervilton | city | Norfolk | United Kingdom | 52.57 | 1.37 | 36 | 15126 |
| Yetholm | city | The Scottish Borders | United Kingdom | 55.55 | -2.27 | 830 | 1082 |
| Yetlington | city | Northumberland | United Kingdom | 55.37 | -1.97 | 830 | 0 |
| Yetminster | city | Dorset | United Kingdom | 50.90 | -2.57 | 239 | 10585 |
| Yewdale | city | Cumbria | United Kingdom | 54.38 | -3.05 | 830 | 2533 |
| Yiewsley | city | Hillingdon | United Kingdom | 51.52 | -0.47 | 111 | 137522 |
| Yn Euar | city | Newry, Mourne and Down | United Kingdom | 54.18 | -6.34 | 118 | 12735 |
| Yn Ooig | city | Highland | United Kingdom | 58.43 | -3.08 | 0 | 0 |
| Yn Çhaayr | city | Cheshire West and Chester | United Kingdom | 53.20 | -2.92 | 39 | 34854 |
| Ynysddu | city | Caerffili | United Kingdom | 51.63 | -3.18 | 830 | 49318 |
| Ynysgynwraidd | city | Herefordshire | United Kingdom | 51.88 | -2.78 | 311 | 3680 |
| Yockleton | city | Shropshire | United Kingdom | 52.68 | -2.90 | 288 | 5503 |
| Yokefleet | city | East Riding of Yorkshire | United Kingdom | 53.70 | -0.77 | 3 | 2674 |
| York | city | York | United Kingdom | 53.97 | -1.08 | 45 | 71477 |
| York City Centre | city | York | United Kingdom | 53.97 | -1.08 | 45 | 71477 |
| Yorton | city | Shropshire | United Kingdom | 52.80 | -2.73 | 272 | 10137 |
| Youlgreave | city | Derbyshire | United Kingdom | 53.17 | -1.70 | 830 | 5513 |
| Yoxall | city | Staffordshire | United Kingdom | 52.75 | -1.78 | 209 | 15262 |
| Yoxford | city | Suffolk | United Kingdom | 52.27 | 1.52 | 39 | 4768 |
| Yr Amwythig | city | Shropshire | United Kingdom | 52.72 | -2.73 | 200 | 40546 |
| Yr As Fawr | city | Bro Morgannwg | United Kingdom | 51.43 | -3.56 | 242 | 10928 |
| Yr Eglwys Wen | city | Shropshire | United Kingdom | 52.97 | -2.68 | 229 | 7250 |
| Yr Eglwys Wen | city | Hampshire | United Kingdom | 51.22 | -1.33 | 249 | 10233 |
| Yr Wig | city | Bro Morgannwg | United Kingdom | 51.44 | -3.55 | 272 | 14576 |
| Yr Wyddgrug | city | Flintshire | United Kingdom | 53.17 | -3.13 | 830 | 25960 |
| Ysbyty Ifan | city | Conwy | United Kingdom | 53.02 | -3.73 | 1007 | 305 |
| Yspytty Cyfyn | city | Ceredigion | United Kingdom | 52.40 | -3.83 | 1046 | 2831 |
| Yspytty Cynfyn | city | Ceredigion | United Kingdom | 52.40 | -3.83 | 1046 | 2831 |
| Yspytty Evan | city | Conwy | United Kingdom | 53.02 | -3.73 | 1007 | 305 |
| Yspytty-Ifan | city | Conwy | United Kingdom | 53.02 | -3.73 | 1007 | 305 |
| Yspytty-Ystwyth | city | Ceredigion | United Kingdom | 52.33 | -3.87 | 830 | 2831 |
| Ystalfera | city | Neath Port Talbot | United Kingdom | 51.75 | -3.78 | 830 | 26806 |
| Ystalyfera | city | Neath Port Talbot | United Kingdom | 51.75 | -3.78 | 830 | 26806 |
| Ystrad Fflur | city | Ceredigion | United Kingdom | 52.27 | -3.83 | 1072 | 2831 |
| Ystrad Mynach | city | Caerffili | United Kingdom | 51.64 | -3.24 | 830 | 49246 |
| Ystrad-Meurig | city | Ceredigion | United Kingdom | 52.28 | -3.92 | 830 | 2831 |
| Ystrad-ffin | city | Carmarthenshire | United Kingdom | 52.10 | -3.77 | 1053 | 899 |
| Ystrad-fflur | city | Ceredigion | United Kingdom | 52.27 | -3.83 | 1072 | 2831 |
| Ystradfellte | city | Powys | United Kingdom | 51.80 | -3.55 | 974 | 6950 |
| Ystradgunlais | city | Powys | United Kingdom | 51.77 | -3.77 | 830 | 25617 |
| Ystradgynlais | city | Powys | United Kingdom | 51.77 | -3.77 | 830 | 25617 |
| Ystradmeuric | city | Ceredigion | United Kingdom | 52.28 | -3.92 | 830 | 2831 |
| Ystradowen | city | Bro Morgannwg | United Kingdom | 51.49 | -3.42 | 249 | 35915 |
| Ystumllwynarth | city | Swansea | United Kingdom | 51.58 | -4.00 | 0 | 30395 |
| Ythanwells | city | Aberdeenshire | United Kingdom | 57.42 | -2.60 | 830 | 1043 |
| Ythsie | city | Aberdeenshire | United Kingdom | 57.37 | -2.18 | 187 | 9486 |