Chappe may refer to:
- Claude Chappe (1763 – 1805), French inventor
- David Chappe (1947 - 2002), American screenwriter
- Georges Chappe (b. 1944), French cyclist
- Jean-Baptiste Chappe d'Auteroche (1722-1769), French astronomer
- Chappe (crater), lunar crater
- 16238 Chappe, main belt asteroid
- a flap of leather attached to a sword's crossguard, also known as a rain-guard