Plymouth to Roscoff ferry crossings connect the southwest of England to Brittany in the northwest of France. The crossing is operated by Brittany Ferries. Brittany Ferries sail up to 2 times per day with an approximate journey time of 6-8 hours.

Plymouth is the most western port in England while Roscoff is the most western port in France. Both Plymouth and Roscoff offer excellent access to major road networks. Therefore getting to and from both ports is easy. This combined with both day and nighttime ferries make the Plymouth to Roscoff crossing very popular with those heading to Brittany.