Alexandre Mouton (November 19, 1804 – February 12, 1885) was a United States Senator and the 11th Governor of Louisiana.
He was born in Attakapas district (now Lafayette Parish) into a wealthy plantation owning Acadian family. He pursued classical studies and graduated from Georgetown College. He studied law, was admitted to the bar in 1825, and commenced practice in Lafayette Parish. He married Zelia Rousseau, the granddaughter of Governor Jacques Dupre, and they had 13 children before her death. In 1829, he married Emma Kitchell Gardner; this marriage had six children.
From 1827 to 1832 was a member of the Louisiana House of Representatives, serving as speaker in 1831 - 1832. He was a presidential elector on the Democratic ticket in 1828, 1832, and 1836, and was an unsuccessful candidate for election in 1830 to the Twenty-second Congress. In 1836 he was again a member of the State house of representatives.
Mouton was elected as a Democrat to the U.S. Senate to fill the vacancy caused by the resignation of Alexander Porter, was reelected to the full term, and served from January 12, 1837, until his resignation on March 1, 1842. While in the Senate he was chairman of the Committee