- LlangefniThe county town and community with a town council in Anglesey, Wales (OS grid ref SH4575).
- LlandinaboA hamlet and civil parish (served by Llanwarne and District Group Parish Council) in Herefordshire, England (OS grid ref SO5128).
- LlanaelhaearnA village and community on the Lleyn Peninsula, Gwynedd, Wales (OS grid ref SH3844).
- LlanbedrogA village and community on the Lleyn Peninsula, Gwynedd, Wales (OS grid ref SH3231).
- LlandarcyA village in Neath Port Talbot borough county borough, Wales, originally built for refinery workers (OS grid ref SS7195).
- Llanddewi BrefiA village and community in Ceredigion, Wales (OS grid ref SN6655).
- LlandysilioA small village and community in Powys, Wales, originally in Montgomeryshire (OS grid ref SJ2619).
- LlanegwadA village and community in Carmarthenshire, Wales (OS grid ref SN5121).
- LlanfoistA village in Llanfoist Fawr community, west of Abergavenny, Monmouthshire, Wales (OS grid ref SO2813).
- LlangelerA small village and community in north-west Carmarthenshire, Wales (OS grid ref SN3739).
- LlangelyninA coastal settlement and community in Gwynedd, Wales (OS grid ref SH5707).
- LlangurigA village and community on the River Wye in Powys, Wales, historically in Montgomeryshire (OS grid ref SN9079).
- LlangynogA village and community in Carmarthenshire, Wales (OS grid ref SN3316).
- LlanrhianA small village and community in north-west Pembrokeshire, Wales (OS grid ref SM8131).
- LlanstadwellA village and community in Pembrokeshire, Wales, between the towns of Milford Haven and Neyland (OS grid ref SM9505).
- LlansteffanA coastal village and community (served by Llansteffan and Llanybri Community Council) in Carmarthenshire, Wales (OS grid ref SN3510).
- Llantilio PertholeyA community and small village near Abergavenny, Monmouthshire, Wales (OS grid ref SO3116).
- Llantwit MajorA coastal town and community with a town council in Vale of Glamorgan borough county borough, Wales (OS grid ref SS9768).
- LlantysilioA community (civil parish) in Denbighshire, Wales.