The MV Leif Ericson is a commercial passenger/vehicle ferry in service with the Canadian operator Marine Atlantic.

She originally operated across the English Channel between Dover, England, and Calais, France, and also operated for awhile in Freight Only Mode on Sealink Stena Line's RORO Freight service to Dunkerque alongside SNCF's TrainFerry Nord-pas-de-Calais The vessel was purchased by the Government of Canada for its Crown corporation Marine Atlantic in 2001 and underwent modifications in preparation for operating the 178 km route between North Sydney, Nova Scotia and Port aux Basques, Newfoundland and Labrador.

In June 2010, Marine Atlantic announced an extensive midlife refit of approximately $18 million over the next twelve months for the MV Leif Ericson.

On 19 September 1995 Stena Challenger ran aground on Blériot Plage whilst waiting to enter the port of Calais.

[4] On 26 October 2006 Leif Ericson collided with a concrete structure in Port aux Basques after losing power.