The area of the 10th-11th-century West Tibetan kingdom and its successor kingdoms Purang, Guge and Ladakh is today mainly divided between China and India, with a small part belonging to Nepal. Tibetan inscriptions constitute an important part of the extensive Buddhist heritage and vital cultural traditions in areas all over historical Western Tibet. This paper seeks to present an overview on these inscriptions in key areas of historical Western Tibet, such as Purang and Guge (including Spiti and Upper Kinnaur), based on selected examples, all of which were documented in situ during the past two decades by taking into account their various contexts. In the first part, after a brief introduction on the research history, the geographical-histo...