Harbour Main, formerly Harbour Main-Whitbourne and Harbour Main-Bell Island, is a provincial electoral district for the House of Assembly of Newfoundland and Labrador, Canada. From 1949 to 1975, the district elected two MHAs.
Between 1972 and the year 2000, it was a Tory stronghold, apart from a two-term Liberal breakthrough in the 1990s.
It includes the southern portion of the town of Conception Bay South and the town of Holyrood, the farthest extern of the St. John's Metropolitan Area. In 2011 the district had 9,005 eligible voters.
In pre-Confederation times when Newfoundland was a colony unto itself, Harbour Main was a district in elections of members of the General Assembly of Newfoundland.
The district has elected the following members of the House of Assembly: