Mafadi, Mountain summit at South Africa-Lesotho border.

Mafadi is a peak on the border of South Africa and Lesotho, reaching 3,446.1 metres; the border line runs across its summit. It lies in the central Drakensberg, within uKhahlamba-Drakensberg Park, and its top is a rock tower about 20 metres high. It is South Africa's highest point, though lower than Thabana Ntlenyana in Lesotho.

The peak takes its name from local languages, with Mafadi meaning Mother of Fadi and Ntheledi meaning Makes me slip in Sotho. These names reflect how local communities historically understood and navigated this challenging terrain.

The peak's Sotho name is disputed: Mafadi is said to mean "Mother of Fadi", while some hold that the original name Ntheledi, "Makes me slip", referring to a nearby stream, is more correct. The summit lies in the uKhahlamba-Drakensberg Park, listed as a UNESCO World Heritage Site since 2000.

Reaching this peak is a multi-day hiking expedition that begins at Injasuti Camp and follows Leslie's Pass toward Marble Baths. Hikers should expect changing weather at altitude and be aware of the border location between two countries.

Mafadi's name is disputed: its original Sotho name is Ntheledi, meaning "Makes me slip", after the nearby stream, while Mafadi means "Mother of Fadi". On 8 October 2015, trail runners Ryan Sandes and Ryno Griesel set a fastest known time of 5h 47.59 min for the ascent via the Northern High Approach, covering 38.52 km from the Njesuthi campsite.