| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Llansa | city | Cataluna | Spain | 42.36 | 3.15 | 830 | 5699 |
| Llansadurnen | city | Carmarthenshire | United Kingdom | 51.76 | -4.49 | 193 | 0 |
| Llansadwrn | city | Carmarthenshire | United Kingdom | 51.95 | -3.90 | 232 | 0 |
| Llansadwrnen | city | Carmarthenshire | United Kingdom | 51.76 | -4.49 | 193 | 0 |
| Llansaint | city | Carmarthenshire | United Kingdom | 51.75 | -4.34 | 249 | 5933 |
| Llansaintffraid | city | Ceredigion | United Kingdom | 52.28 | -4.18 | 262 | 1730 |
| Llansaintffread | city | Powys | United Kingdom | 52.18 | -3.32 | 856 | 1490 |
| Llansaintfraed in Elvel | city | Powys | United Kingdom | 52.18 | -3.32 | 856 | 1490 |
| Llansanffraid | city | Powys | United Kingdom | 52.77 | -3.15 | 249 | 3197 |
| Llansanffraid-ym-Mechain | city | Powys | United Kingdom | 52.77 | -3.15 | 249 | 3197 |
| Llansannan | city | Conwy | United Kingdom | 53.17 | -3.60 | 830 | 0 |
| Llansantffraid | city | Powys | United Kingdom | 52.77 | -3.15 | 249 | 3197 |
| Llansantffraid | city | Conwy | United Kingdom | 53.27 | -3.80 | 226 | 34542 |
| Llansantffraid | city | Ceredigion | United Kingdom | 52.28 | -4.18 | 262 | 1730 |
| Llansantffraid Glan Conwy | city | Conwy | United Kingdom | 53.27 | -3.80 | 226 | 34542 |
| Llansantffraid Glyn Ceiriog | city | Wrexham | United Kingdom | 52.93 | -3.18 | 830 | 8574 |
| Llansantffraid-Glan-Conway | city | Conwy | United Kingdom | 53.27 | -3.80 | 226 | 34542 |
| Llansantffraid-ym-Mechain | city | Powys | United Kingdom | 52.77 | -3.15 | 249 | 3197 |
| Llansantffread | city | Powys | United Kingdom | 51.90 | -3.27 | 830 | 1490 |
| Llansawel | city | Carmarthenshire | United Kingdom | 52.00 | -4.02 | 830 | 0 |
| Llansawel | city | Neath Port Talbot | United Kingdom | 51.63 | -3.82 | 396 | 21471 |
| Llansilin | city | Powys | United Kingdom | 52.83 | -3.18 | 830 | 3324 |
| Llanso de Santa Isabel | city | Puerto Rico | United States | 17.97 | -66.41 | 39 | |
| Llansoi | city | Sir Fynwy | United Kingdom | 51.72 | -2.81 | 226 | 2682 |
| Llansoy | city | Sir Fynwy | United Kingdom | 51.72 | -2.81 | 226 | 2682 |
| Llanspyddid | city | Powys | United Kingdom | 51.95 | -3.43 | 830 | 1490 |
| Llanspyddyd | city | Powys | United Kingdom | 51.95 | -3.43 | 830 | 1490 |
| Llanstadwell | city | Sir Benfro | United Kingdom | 51.71 | -4.97 | 0 | 7717 |
| Llansteffan | city | Carmarthenshire | United Kingdom | 51.77 | -4.39 | 0 | 0 |
| Llanstephan | city | Powys | United Kingdom | 52.07 | -3.28 | 830 | 1490 |
| Llanstephan | city | Carmarthenshire | United Kingdom | 51.77 | -4.39 | 0 | 0 |
| Llanstinan | city | Sir Benfro | United Kingdom | 51.95 | -4.97 | 830 | 4442 |
| Llanstinan Home Farm | city | Sir Benfro | United Kingdom | 51.95 | -4.97 | 830 | 4442 |