Olivier J. Leblanc
Member of the Canadian Parliament for Kent
In office 1900–1911
Preceded by	George Valentine McInerney
Succeeded by	Ferdinand-Joseph Robidoux
Member of the Legislative Council of New Brunswick
In office 1891–1892
Member of the Legislative Assembly of New Brunswick for Kent County
In office 1882–1891
Preceded by	Urbain Johnson
Succeeded by	Auguste Théophile Léger
Personal details
Born	(1830-11-27)November 27, 1830 Memramcook, New Brunswick
Died	December 14, 1919(1919-12-14) (aged 89)
Political party	Liberal

Olivier J. LeBlanc (November 27, 1830 – December 14, 1919) was a Canadian politician of Acadian descent.

Born in Memramcook, New Brunswick, the son of Joseph LeBlanc and Victorie B. Girouard, LeBlanc was educated at Common Schools. A farmer, he was elected to the Legislative Assembly of New Brunswick in 1882. His election in 1882 was protested but he was reelected in a by-election held later that year. Leblanc subsequently was a Minister without portfolio in the Executive Council from 1889 to 1891. He ran unsuccessfully for a federal seat in 1891 and was then named to the Legislative Council of New Brunswick.

LeBlanc was first elected to the House of Commons of Canada for the riding of Kent in the general elections of 1900. A Liberal, he was re-elected in 1904 and 1908.

• Olivier J. Leblanc – Parliament of Canada biography
• The Canadian parliamentary companion, 1891, JA Gemmill
• The Canadian Parliament; biographical sketches and photo-engravures of the senators and members of the House of Commons of Canada. Being the tenth Parliament, elected November 3, 1904