The Leader of the Opposition (French: Chef de l'Opposition) in Nova Scotia is the MLA in the Nova Scotia House of Assembly who leads the political party recognized as the Official Opposition. This status generally goes to the leader of the second largest party in the Legislative Assembly. Jamie Baillie, the current leader of the Progressive Conservative Party of Nova Scotia, is the current leader of the opposition.

Leaders of the Opposition

Leaders of the Opposition of the colony of Nova Scotia (1848-1867)

Conservative Leader

• James W. Johnston (1848-1857)

Liberal Leader

• William Young (1857-1860)

Conservative Leader

• James W. Johnston (1860-1864)

Liberal Leader

• Adams George Archibald (1864-1867)

Leaders of the Opposition of the Province of Nova Scotia, since Confederation (1867)

Liberal-Conservative Leader

• Hiram Blanchard (1867-1874)

Conservative Leader

• Simon H. Holmes (1875-1878)

Liberal Leader

• none as they only had a House Leader (William F. McCurdy) (1878-1882)

Liberal-Conservative Leader

• Adam C. Bell (1883-1886)
• William McKay (1887-1890)
• C. H. Cahan (1891-1894)
• William McKay (1895-1897)
• Charles S. Wilcox (1898-1901)
• Charles E. Tanner (1902-1908)
• Charles S. Wilcox (1909)
• John M. Baillie (1910-1911)
• Charles E. Tanner (1912-1916)
• William Lorimer Hall (1917-1920)

United Farmers Leader

• Daniel G. McKenzie (1921-1925)

Liberal Leaders

• William Chrisholm (1926-1930)
• Alexander S. MacMillan (1931-1933)

Conservative Leaders

• Gordon S. Harrington (1934-1937)
• Percy C. Black (1938-1939)
• Fred M. Blois (1940)
• Leonard W. Fraser (1941)
• Fred M. Blois (1942-1945)

Co-operative Commonwealth Federation (Nova Scotia Section) Leader

• Russell Cunningham (1946-1949)

Progressive Conservative Leader

• Robert L. Stanfield (1950-1956)

Liberal Leaders

• Henry D. Dicks (1957-1960)
• Earl W. Urquhart (1961-1963)
• Peter M. Nicholson (1964-1967)
• Gerald A. Regan (1968-1970)

Progressive Conservative Leaders

• George I. Smith (1970-1971)
• John Buchanan (1971-1978)

Liberal Leaders

• Gerald A. Regan (1978-1979)
• Benoit Comeau (1980)
• A. M. (Sandy) Cameron (1980-1984)
• Vincent MacLean (1985)
• Bill Gillis (1985-1986)
• Vincent MacLean (1986-1992)
• Bill Gillis (1992-1993)

Progressive Conservative Leaders

• Terrence Donahoe (1993-1995)
• John Hamm (1995-1998)

New Democratic Leader

• Robert Chisholm (1998-1999)

Shared Leaders

Due to a an equal number of seats won by the opposition parties in the 1999 election, the following three shared the duties of Leader of the Official Opposition from 1999-2001.

• Robert Chisholm (NDP)
• Russel MacLellan (Liberal)
• Wayne Gaudet (Liberal)

New Democratic Leaders

• John MacDonald (2001)
• Darrell Dexter (2001-2009)

Liberal Leader

• Stephen McNeil (2009-2013)

Progressive Conservative Leader

• Jamie Baillie (2013-Present)