Sonklarspitze, Mountain peak on Austria-Italy border in Stubai Alps.

Sonklarspitze is a mountain peak in the Stubai Alps located on the Austria-Italy border, reaching 3444 meters in elevation. The massif is shaped by the Triebenkarlasferner glacier to the west and Übeltalferner glacier to the east.

The first ascent on 5 August 1869 was made by Richard Gutberlet and his companions, who started from the Sulzenaualpe near today's Sulzenauhütte, crossed the Sulzenauferner to the Sonklarscharte and followed the north ridge to the summit in about six hours. The mountain is named after the military geographer Carl Albrecht Sonklar von Innstädten.

The mountain carries both German and Italian names, showing the linguistic divide between the Austrian and Italian sides of the Tyrol border. This reflects how local communities on each side identify with their own languages.

Climbers typically start their ascent from mountain huts such as Müllerhütte at 3143 meters or Becherhaus at 3190 meters. These huts operate during the warmer months, roughly from June through September.

The summit was once a broad, firn-covered dome, but the highest point has shifted to the summit cross as the summit firn melted away with climate change. The mountain is named after Carl Albrecht Sonklar von Innstädten, a military geographer and surveyor of the k.k. army.