This study is a detailed grammatical description of the Gūrānī language as used in the village of Gawrajū, located near the town of Gahvāre in the province of Kermānšāh, Iran. Gūrānī is genetically classified as a North-West Iranian language in the Indo-Iranian branch of the Indo-European language family. Gūrānī is of particular historical significance especially as it was the language of the court of the Kurdish Ardalān principality (fourteenth to nineteenth centuries). This grammatical description of Gawrajū Gūrānī (‘Gawrajūyī’) is based on spoken material from a corpus of twelve texts. The study is written from primarily a functional-typological theoretical framework. It presents the main structures and word classes, as well as a selection of functional systems and the use of certain structures. One chapter focuses on issues of Information Structure. There are also observations about linguistic variation within Gūrānī.