- C Express (1966)
- C.T.M.A. Vacancier (1973)
- Calais Seaways (1992)
- California Star (2001)
- Calmar Nyckel (1960)
- Candi (1971)
- Cap Finistére (2001)
- Capella (1972)
- Capella av Stockholm (1972)
- Capo Bianco (1960)
- Caribbean Express (1976)
- Caribe (1968)
- Caribe Bremen (1968)
- Carmen Del Mar (1970)
- Carthage (1999)
- Cartour (2001)
- Cartour Beta (2006)
- Casino Express (1966)
- Castalia (1974)
- Cat-Link III (1996)
- Cat-Link IV (1998)
- Cat-Link V (1998)
- Catalonia (1998)
- Catalonia L (1998)
- Catania (2003)
- Celebration (1981)
- Celtic Horizon (2006)
- Celtic Pride (1972)
- Cesme (1974)
- Ceuta Jet (1998)
- Champion Jet 1(1997)
- Channel Entente (1975)
- Champion Jet 2(1996)
- Channel Seaway (1980)
- Chartres (1974)
- Christian IV (1982)
- Christina Brahe (1974)
- Cinderella (1989)
- Cintu (2009)
- City of Cork (1973)
- Ciudad Autonoma Melilla (2001)
- Ciudad de Alcudia (1994)
- Ciudad De Badajoz (1979)
- Ciudad de Cadiz (2004)
- Ciudad de Ibiza (2003)
- Ciudad de La Laguna (1967)
- Ciudad de Mahon (2000)
- Ciudad de Tanger (1993)
- Clodia (1980)
- Clodiar (1980)
- Club Sea (1975)
- Color Fantasy (2004)
- Color Festival (1985)
- Color Hybrid (2019)
- Color Magic (2007)
- Color Traveller (1981)
- Color Viking (1975)
- Color Viking (1985)
- Commodore (1969)
- Commodore Clipper (1999)
- Condor 10 (1993)
- Condor Express (1996)
- Condor Islander (2005)
- Condor Liberation (2010)
- Condor Rapide (1997)
- Condor Vitesse (1997)
- Condor Voyager (2000)
- Connemara (2007)
- Copenhagen (2016)
- Coraggio (2007)
- Corbiere (1970)
- Corse (1983)
- Corsica Express (1995)
- Corsica Express II (1996)
- Corsica Express Seconda (1996)
- Corsica Express Three (1996)
- Corsica Marina (1964)
- Corsica Marina II (1974)
- Corsica Marina Seconda (1974)
- Corsica Regina (1972)
- Corsica Serena II (1974)
- Corsica Serena Seconda (1974)
- Corsica Vera (1975)
- Corsica Victoria (1973)
- Corsica Viva II (1972)
- Côte d´Albátre (2006)
- Côte Des Dunes (2001)
- Côte Des Flanders (2005)
- Côte D’Opale (2021)
- Cotentin (2007)
- Cracovia (2002)
- Crown of Scandinavia (1994)
- Crown Princess (1967)
- Crown Princess Victoria (1967)
- Crown Seaways (1994)
- Crucero Express (1973)
- Cruise Ausonia (2002)
- Cruise Barcelona (2008)
- Cruise Europa (2009)
- Cruise Muhibah (1970)
- Cruise Olympia (2010)
- Cruise Roma (2008)
- Cruise Smeralda (1997)
- Cyrnos (1979)