Claude-Louis Mathieu
Birth date25 November 1783
Birth placeMâcon
Death date5 March 1875
Death placeParis
Fieldmathematics
astronomy
Work institutionsBureau des Longitudes
Known fordistance of the stars
PrizesLalande Prize (1808), (1815)

Claude-Louis Mathieu (25 November 1783 – 5 March 1875) was a French mathematician and astronomer who began his career as an engineer. He worked with the Bureau des Longitudes and tried to determine the distance of the stars.

Awarded the Lalande Prize twice, in 1808 and 1815.