Louis-Éphrem Olivier (August 28, 1848 – December 21, 1882) was a physician and political figure in Quebec, Canada.
He represented Mégantic in the House of Commons of Canada from 1878 to 1882 as a Liberal member.
He was born in Saint-Nicolas, Canada East, the son of Jean Baptiste Olivier and Thessile Plante, and was educated at the Séminaire de Québec.
In 1875, he married Maria Adelia Pelletier.
This article about a Quebec Member of Parliament from the Liberal Party of Canada is a stub.