J.-Eugène Lefrançois (9 August 1896 – 13 January 1979) was a Liberal party member of the House of Commons of Canada and the Senate.
In 1936, Lefrançois made an unsuccessful attempt to win a seat in the Legislative Assembly of Quebec.
In April 1957, as he completed his House of Commons term in the 22nd Canadian Parliament, Lefrançois was appointed to the Senate under Quebec's Repentigny constituency where he remained until 5 November 1976.
Lefrançois died on 13 January 1979 aged 82, survived by his wife Rosina, a son and a daughter.
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