The following table lists the names of Breton communities which have concluded town twinning agreements with communities in Cornwall:
| Cornwall | Brittany | ||
|---|---|---|---|
| Falmouth | Aberfal | Douarnenez | Douarnenez |
| Bodmin | Bosvena | Le Relecq-Kerhuon | Ar Releg-Kerhuon |
| St Buryan | Eglosveryan | Calan | Kalann |
| Saltash | Essa | Plougastel-Daoulas | Plougastell-Daoulaz |
| Millbrook | Govermelin | Plouider | Plouider |
| Hayle | Heyl | Pordic | Porzhig |
| Helston | Hellys | Pleumeur-Bodou | Pleuveur-Bodoù |
| Calstock | Kalstok | Saint-Thuriau | Sant-Turiav |
| Camborne | Kammbronn | Sainte-Anne-d'Auray | Santez-Anna-Wened |
| Callington | Kelliwik | Guipavas | Gwipavaz |
| St Germans | Lannaled | Plouguerneau | Plougerne |
| Feock | Lannfyek | Hôpital-Camfrout | An Ospital |
| Crantock | Lanngorrow | Carantec | Karanteg |
| Constantine | Lanngostentin | Pont-Croix | Pontekroaz |
| Launceston | Lannstevan | Plestin-les-Grèves | Plistin |
| St Erth | Lannudhno | Ploulec'h | Ploulec'h |
| St Just in Penwith | Lannust | Huelgoat | An Uhelgoad |
| Mabe | Lannvab | Primelin | Prevel |
| Looe | Logh | Quiberon | Kiberen |
| Lostwithiel | Lostwydhyel | Pleyber-Christ | Pleiber-Krist |
| The Lizard | Lysardh | Landévennec | Landevenneg |
| Liskeard | Lyskerrys | Quimperlé | Kemperle |
| Penryn | Pennrynn | Audierne | Gwaien |
| Penzance | Pennsans | Concarneau | Konk-Kerne |
| Torpoint | Penntorr | Bénodet | Benoded |
| Wadebridge | Ponswad | Langueux | Langaeg |
| St. Ives | Porth Ia | Camaret | Kameled |
| Bude | Porthbud | Ergué-Gabéric | An Erge-Vras |
| Cawsand | Porthbugh | Porspoder | Porspoder |
| Porthleven | Porthleven | Guissény | Gwiseni |
| Redruth | Resrudh | Plumergat | Pluvergad |
| Meriasek | Meriadeg | ||
| St Neot | St Neot | Malguénac | Malgeneg |
| Stithians | Stedhyan | Ploërdut | Pleurdud |
| Storuay or Newquay | Tewynblustri | Dinard | Dinarzh |
| Truro | Truru | Morlaix | Montroulez |
