'''Llugwy''' (or '''Lligwy''') may refer to a number of places and archaeological sites in Wales:
* River Llugwy (Afon Llugwy), in Snowdonia * Ffynnon Llugwy, a lake in Snowdonia * Lligwy Bay, in Anglesey * Capel Lligwy, a ruined 12th-century Anglesey church * Din Lligwy, an Iron Age hut circle in north east Anglesey * Lligwy Burial Chamber, a Neolithic site in north east Anglesey * Caer Llugwy (also known as Bryn-y-Gefeiliau), a Roman fort near Capel Curig * Llugwy, Gwynedd, hamlet near Pennal, Gwynedd * Llugwy Hall, ancestral Home of the Anwyl Family, near Pennal, Gwynedd
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