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