The Nadelhorn (4,327 m) is a mountain in the Pennine Alps in Switzerland. It is the highest point on the Nadelgrat, a high-level ridge running roughly north–south above the resort of Saas-Fee to the east, and the Mattertal to the west. Its three ridges join to form a sharp-pointed summit, which looks like a needle (German: Nadel) when seen from the north. The other summits on the Nadelgrat are the Stecknadelhorn, the Hohberghorn, the Dürrenhorn and the Lenzspitze.

It was first climbed by Franz Andenmatten, Baptiste Epiney, Aloys Supersaxo and J. Zimmermann on 16 September 1858.

• List of 4000 metre peaks of the Alps

• Dumler, Helmut and Willi P. Burkhardt, The High Mountains of the Alps, London: Diadem, 1994

• The Nadelhorn on SummitPost
• The Nadelgrat on SummitPost