Charles-Alfred Desjardins (January 26, 1846 – September 6, 1934) was a farmer, merchant, manufacturer and political figure in Quebec.
He was born in Kamouraska, Canada East, the son of Joseph Roy dit Desjardins and Rose Ouellet, and was educated there.
He first worked as a navigator like his father, then purchased a clock factory that he converted to manufacture agricultural equipment.
He built and operated aqueducts at Saint-André and Cabano, as well as the telephone system at Kamouraska.
Desjardins was an unsuccessful candidate for a seat in the Quebec assembly in 1886.