The Türnitz Alps (German: Türnitzer Alpen) is a mountain range of the Northern Limestone Alps in southern Lower Austria and the adjacent state of Styria.

To the south it is bordered by the Salza valley in Halltal and the municipality of Mariazell.

According to the Alpine Club classification of the Eastern Alps (AVE) the group is bounded as follows:[1] The mountain group covers an area of about 30 by 30 km and forms the transition from the pre-alps in the Danube region to the higher peaks of the Mürzsteg Alps, which mostly lie in Upper Styria.

The mountains reach a height of 1,400 m in the Großer Sulzberg, and have several other peaks over 1,350 m. The best-known peaks are: Notable passes and crossings are: The valleys of the Türnitz and Traisen have steep mountainous sides and there is little room for settlements.

Only well-known tourist destinations, like the Eibl and Tirolerkogel, have large areas of Alpine pasture (Almen).