Claude-Louis Navier, French physicist and engineer (d. 1836)
Claude-Louis Navier (born Claude Louis Marie Henri Navier; French: [klod lwi maʁi ɑ̃ʁi navje]; 10 February 1785 – 21 August 1836), was a French mechanical engineer, affiliated with the French government, and a physicist who specialized in continuum mechanics.

The Navier–Stokes equations refer eponymously to him, with George Gabriel Stokes.