A nappe, in geology, is a sheet of rock moved more than 2 km above a thrust fault.

Nappe may also refer to:

• Nappe (water), in hydraulic engineering, a sheet of water flowing over a dam or similar structure
• Nappe (geometry), either half of a double cone
• Orlando Nappe (c. 1931–2007), Argentine footballer

• Nap (disambiguation)
• Nape (disambiguation)
• Napp (disambiguation)
• Nappage, in baking, a glazing technique