The 6th Legislative Assembly of Quebec was the provincial legislature in Quebec, Canada that existed from October 14, 1886, to June 17, 1890. During most of the term, the Quebec Liberal Party, also known as the Parti national as that period, was the governing party. However, the Quebec Conservative Party despite losing the election tried to form a minority government with John Jones Ross and Louis-Olivier Taillon as Premiers but only managed to last a few months before the Liberals led by Honoré Mercier, the founder of the Parti National, formed a narrow majority government with 33 of the 65 seats of the Legislative Assembly of Quebec.

• After the 1886 elections

This was the list of members of the Legislative Assembly of Quebec that were elected in the 1886 election:

Other MLAs were elected during by-elections or in another district between the two general elections

• Georges Duhamel, Parti national, Iberville, December 11, 1886
• Louis-Olivier Taillon, Quebec Conservative Party, Montcalm, December 11, 1886
• Odilon Goyette, Parti national, St. Hyacinthe, July 30, 1887,
• Alfred Rochon, Quebec Liberal Party, Ottawa (Outaouais), September 14, 1887
• Louis-Phillippe Pelletier, Nationalist Conservative, Dorchester, December 20, 1888
• Charles Champagne, Quebec Liberal Party, Hochelaga, April 28, 1888
• Joseph-Hormidas Legris, Parti national, Maskinongé, April 28, 1888
• Tancrède Boucher de Grosbois, Quebec Liberal Party, Shefford, May 18, 1888
• Séverin Dumais, Parti national, Chicoutimi et Saguenay, June 18, 1888
• Honoré Brunelle Tourigny, Quebec Conservative Party, Nicolet, July 17, 1888
• William Rhodes, Quebec Liberal Party, Mégantic, December 27, 1888
• Rufus Nelson England, Quebec Conservative Party, Brome, November 28, 1889
• Auguste Tessier, Quebec Liberal Party, Rimouski, December 4, 1889,
• Omer Dostaler, Quebec Liberal Party, Berthier, Janvier 15, 1890

The electoral map was reformed in 1890 just a few months prior to the elections later that year.

• Drummond et Arthabaska was split into two ridings: Drummond and Arthabaska
• Lac-Saint-Jean was created from parts of Chicoutimi et Saguenay.
• Matane was created from parts of Rimouski.
• Montréal-Est was split into three districts called Montréal division no. 1, Montréal division no. 2 and Montréal division no. 3
• Montréal-Ouest was split into two districts called Montréal division no. 4 and Montréal division no. 5.
• Montréal-Centre was renamed Montréal division no. 6.
• Richmond et Wolfe was split into two new riding: Richmond and Wolfe
• Saint-Sauveur was created from parts of Québec-Est.

• 1886 election results
• List of Historical Cabinet Ministers