The Halifax Three (or The Halifax III), originally The Colonials, was a folk music band in Canada in the 1960s. the members of the trio were Denny Doherty, Pat LaCroix, and Richard Byrne. The group, with the addition of Toronto born Zal Yanovsky, toured with The Journeymen and played Carnegie Hall in New York City.

Two of the major folk rock groups of the late 1960s rose from The Halifax Three/Journeyman meeting. After the Halifax group broke up, Doherty and Yanovsky formed The Mugwumps with Cass Elliot and John Sebastian. When that band ended, Sebastian and Yanovsky formed The Lovin’ Spoonful, while Doherty and Elliot joined Journeyman John Phillips and wife Michelle to form The Mamas & The Papas.