Sir François Langelier, KCMG FRSC (24 December 1838 – 8 February 1915) was a Canadian lawyer, professor, journalist, politician, the tenth Lieutenant Governor of Quebec, and author.

In 1871, he was an unsuccessful candidate to the Legislative Assembly of Quebec for the riding of Bagot.

He resigned in 1898 when he was appointed a puisne judge of the Quebec Superior Court for the district of Montreal.

[citation needed] From 1911 to his death, he was the Lieutenant Governor of Quebec.

[citation needed] His brother Charles Langelier was also an MP from 1887 to 1890.