Jean le Rond d'Alembert (1717–1783) was a French mathematician.
d'Alembert may also refer to:
Mathematics d'Alembert operator d'Alembert's principle d'Alembert's equation d'Alembert's formula d'Alembert's theorem
Other uses d'Alembert (crater), on the Moon D'Alembert, Quebec, a community in Canada, now part of Rouyn-Noranda
See also D'Alembert's Principle (novel), by Andrew Crumey Family D'Alembert, a series of science fiction novels by Stephen Goldin