Courtemanche is a surname. It is believed to have originated in the area of Maine, France. ^[1] There are several known variations of the name, including Courdemanges, Courdemanche, and Courtemanchie.

Notable people with the surname include:

• David Courtemanche (born 1964), Canadian politician
• Gil Courtemanche (1943–2011), Canadian journalist and writer
• Henri Courtemanche (1916–1986), Canadian politician
• Michel Courtemanche (born 1964), Canadian comedian and actor

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