This textbook provides an introduction to the grammar of Sumerian, one of the oldest documented languages in the world. It not only synthesizes the results of recent scholarship but introduces original insights on many important questions. The book is designed to appeal to readers of all backgrounds, including those with no prior background in Sumerian or cuneiform writing.It is written for undergraduate students and structured for a semester-long course: the order of the topics is determined by didactic considerations, with the focus on syntactic analysis and evidence. It explains the functioning of Sumerian grammar in 16 lessons, illustrated with more than 500 fully glossed examples. Each lesson ends with a series of tasks; a solution key to selected exercises can be found at the end of the volume. Above all, this is the first Sumerian textbook that introduces and utilizes the online assyriological resources available on the internet. An Introduction to the Grammar of Sumerian has been written on the assumption that after decades of grammatical research it has become possible now to teach a general framework of Sumerian grammar that may function as the basis of further, more intensive and elaborate studies.