Tweralpspitz, Mountain summit in canton St. Gallen, Switzerland.

Tweralpspitz is a mountain summit in the canton of St. Gallen, Switzerland, reaching 1,332 metres. It is the highest point of the Nagelfluh chain north of Ricken Pass and the highest point of the municipalities of Wattwil and Eschenbach. The mountain is built mainly of Upper Freshwater Molasse rocks: Nagelfluh conglomerate, sandstone and marl.

The sources record no historical events, dates or figures tied to the Tweralpspitz; it is documented as a topographic feature, the 1,332 m highest point of the municipalities of Wattwil (east) and Eschenbach (west) and the main summit of the Nagelfluh chain north of Ricken Pass. Its rock, the Obere Süsswassermolasse of Nagelfluh, sandstone and marl, records the geological history of the area rather than any human one.

The Tweralpspitz marks the highest point of both Wattwil and Eschenbach, so the summit itself lies on the boundary between the two municipalities. Walkers coming up from either side cross farmland and forest before reaching the crest, where the cantonal boundary line runs through the rock.

The summit lies on the boundary between Wattwil and Eschenbach, north of Ricken Pass; approach routes start from these villages and from the pass road. The upper slopes are forested and the trails are not marked throughout, so carry a map. Snow can linger into spring on the north side.

The summit is the highest point of the Nagelfluh chain north of Ricken Pass, built of Upper Freshwater Molasse: Nagelfluh conglomerate, sandstone and marl. The Nagelfluh is a pebble conglomerate, and the rock is the reason the ridge stands above its neighbours such as Höchhand (1,314 m) and Schwarzenberg (1,293 m).