|6th Premier of Quebec|
July 29, 1882 – January 22, 1884
|Lieutenant Governor||Théodore Robitaille|
|Preceded by||Joseph-Adolphe Chapleau|
|Succeeded by||John Jones Ross|
|MLA for Jacques-Cartier|
August 26, 1882 – January 22, 1884
|Preceded by||Narcisse Lecavalier|
|Succeeded by||Arthur Boyer|
|Member of the Canadian Parliament|
January 22, 1874 – July 29, 1882
|Preceded by||Pierre-Samuel Gendron|
|Succeeded by||Flavien Dupont|
|Born||July 17, 1837|
Sainte-Geneviève-de-Berthier, Lower Canada
|Died||March 30, 1886 (aged 47)|
|Political party||Conservative Party of Quebec|
|Relations||Joseph Octave Mousseau, brother|
|Cabinet||Attorney General (1882–1884)|
President of the Privy Council (1880–1881)
Secretary of State of Canada (1881–1882)
Joseph-Alfred Mousseau,(July 17, 1837 – March 30, 1886), was a French Canadian politician, who served in the federal Cabinet and also as the sixth premier of Quebec.
He was born in Sainte-Geneviève-de-Berthier, Lower Canada, the son of Louis Mousseau, the son of Alexis Mousseau, and Sophie Duteau, dit Grandpré. Mousseau was first elected to the House of Commons of Canada as a Conservative Member of Parliament in the 1874 election for the riding of Bagot, and was re-elected three times. In 1880, he was elevated to the Cabinet of Prime Minister Sir John A. Macdonald, serving first as president of the Queen's Privy Council of Canada, and then as Secretary of State for Canada.
Mousseau left federal politics to become the sixth Premier of the province of Quebec from July 31, 1882, until his resignation on January 22, 1884, after being appointed as a judge. He died in Montreal in 1886.
His brother Joseph Octave Mousseau was also a member of the Canadian House of Commons.