Lorrainville (French pronunciation: [lɔʁɛ̃vil]) is a municipality in northwestern Quebec, Canada, in the Témiscamingue Regional County Municipality.

The geographic township of Duhamel, created in 1877 (named after Joseph-Thomas Duhamel), was opened for colonization in 1884. The settlement was named after Narcisse-Zéphirin Lorrain (1842-1915), bishop of Pembroke at that time. In 1889, its post office opened. The place saw significant growth in 1905, when it became an important agricultural centre. In 1910, the Parish of Notre-Dame-de-Lourdes-de-Lorrainville was established. In 1912, the Parish Municipality of Notre-Dame-de-Lorrainville was created when it separated from the Township Municipality of Duhamel and the United Township Municipality of Laverlochère et Baby, with Joseph Bellehumour as its first mayor. It was later renamed to Notre-Dame-de-Lourdes-de-Lorrainville.

In 1930, the village centre of the parish municipality separated to become the Village Municipality of Lorrainville, with Eddy Guimond as its first mayor. In 1994, these two entities rejoined again to become the Municipality of Lorrainville.

Historical census populations – Lorrainville

Year	Pop.	±%
1996	1,507	—
2001	1,411	−6.4%
2006	1,325	−6.1%
2011	1,328	+0.2%
2016	1,272	−4.2%
2021	1,286	+1.1%
Population figures based on revised counts. Source: Statistics Canada

Mother tongue (2021):

• English as first language: 0.8%
• French as first language: 97.7%
• English and French as first language: 1.2%
• Other as first language: 0.4%

List of former mayors (since formation of current municipality):

This list is incomplete; you can help by adding missing items. (December 2023)

• Philippe Boutin (...–2005, 2009–2013)
• Marc Champagne (2005–2009)
• Simon Gélinas (2013–2023)
• Jean Martineau (2023–present)

• List of municipalities in Quebec

• Official website