Louis-Joseph Francœur (8 October 1738 – 10 March 1804) was a French violinist, composer, and administrator of the Opéra de Paris.
Born in Paris, the son of composer Louis Francoeur, he was raised by his uncle François Francœur following the death of his father in 1745.
The French Revolution disrupted his career and led to his ruin.
He directed the Opera in 1799, but died in 1804, isolated, forgotten and highly indebted.
He wrote theoretical essays, including the Diapason général de tous les instruments à vent (1772).