Geographic Information Systems (sometimes known as Geographic Information Science), or GIS has been used as both a tool and as an approach in archaeology since the mid-1980s. From the late 1990s onwards it has been a mainstay of the archaeological discipline and is used for recording and interpreting excavation and survey data, as well as for managing various types of archival data in Sites and Monuments Records and Historic Environments Records. In this module we discuss what GIS is, the usefulness or otherwise of different types of GIS, types of data that can be used in a GIS and how GIS data can be queried, analysed, output and interpreted. Students are also taught how to use the basic procedures of one standard GIS package. The module is divided into lecture sessions and practicals. Although there are no pre- or co-requisites, it is assumed that students will be well versed in use of standard Microsoft software such as Office, Outlook and Explorer, that they have access to the University’s Learning Environment and sufficient available network space to be able to access the downloads used in the practical sessions.