Alembert and its variants may refer to:
People:
- Jean le Rond d'Alembert (1717-1783), French philosopher and mathematician
- Sandy D'Alemberte (b. 1933), American lawyer and former politician
Places:
- D'Alembert (crater), a lunar impact crater
Mathematics and Physics:
- d'Alembert's formula, a mathematical formula
- d'Alembert's paradox, a statement concerning inviscid flow
- d'Alembert's principle, a statement of the fundamental classical laws of motion
- d'Alembert-Euler condition, a mathematical and physical condition
- D'Alembert operator, an operator of the Einstein equation
- Ratio test, also known as D'Alembert's test, a test for the convergence of a series