Ruben John Efford PC (January 6, 1944 – January 2, 2022) was a Canadian politician. He first served as a member of the Newfoundland and Labrador House of Assembly (MHA) from 1985 to 2001, representing Port de Grave electoral district and also serving as cabinet minister of various portfolios. After losing the 2001 leadership convention of the Liberal Party of Newfoundland and Labrador, he went into federal politics and served as a Member of Parliament (MP) from 2002 until 2006 for the Liberal Party of Canada. He initially represented Bonavista—Trinity—Conception, before switching to Avalon after electoral redistribution prior to the 2004 federal election.