Alexandre Thurber (April 2, 1871 – April 19, 1958) was an industrialist and political figure in Quebec.
He represented Chambly in the Legislative Assembly of Quebec from 1923 to 1931 and from 1935 to 1936 as a Liberal.
He was born in Montreal, the son of Alexandre Thurber and Émiline Davignon who was the daughter of Pierre Davignon.
Thurber was educated at the Collège de Longueuil.
He worked as a clerk for fifteen years and then became an iron manufacturer at Longueuil.
In 1894, he married Rose-Anne Larocque.
Thurber served as mayor of Longueuil from 1915 to 1925 and from 1933 to 1935.
He was first elected in the 1923 Quebec general election and re-elected in 1927, but did not run for reelection to the assembly 1931.