Joseph Gauthier (French pronunciation: [ʒozɛfɡotje]; March 11, 1842 – September 26, 1911) was a farmer, grain merchant and political figure in Quebec. He represented L'Assomption in the House of Commons of Canada from 1887 to 1892 and from 1896 to 1900 as a Liberal.

He was born in Saint-Lin, Canada East, the son of Louis Gauthier and Aline Renaud. In 1865, Gauthier married Philomène Daunais. He served as mayor of Saint-Lin from 1872 to 1880. He ran unsuccessfully for a seat in the House of Commons in 1882. He was first elected in 1887; that election was appealed but he won the by-election which followed in 1888. His election in 1891 was declared void in 1892 and Hormidas Jeannotte was elected by acclamation in the by-election that followed. Gauthier defeated Jeannotte in the 1896 federal election. He died in Saint-Lin at the age of 69.

Election results

vte1882 Canadian federal election: L'Assomption
PartyCandidateVotes
Liberal–ConservativeHilaire Hurteau1,019
LiberalJoseph Gauthier852
vte1887 Canadian federal election: L'Assomption
PartyCandidateVotes
LiberalJoseph Gauthier1,117
ConservativeBarthélémi Rocher1,096

By-election: On Mr. Gauthier being unseated, 3 March 1888

PartyCandidateVotes
By-election on 3 April 1888
LiberalJoseph Gauthier1,162
UnknownBarthélémi Rocher1,075
vte1891 Canadian federal election: L'Assomption
PartyCandidateVotes
LiberalJoseph Gauthier1,239
ConservativeHormidas Jeannotte1,161