The map is a primary tool in geographic research, and the discipline of geography has experienced a significant methodological transformation during the last three decades with the development and now near ubiquity of geographic information systems (GIS) technology. The introduction of this technology into Indian country has spurred a debate over the appropriateness and effectiveness of using GIS for Native mapping purposes. In this article, the author reviews issues concerning the use of GIS in Native communities and presents a case study of one particular tribe's implementation of the technology. GIS are computer systems designed to store, manipulate, and portray spatial data, theoretically making analysis of such data easier, faster, and more powerful. However, many in the geographic community view GIS as a "contradictory technology that can both empower and marginalize people and communities." At the same time that broader debates about the social impacts of GIS, public-participation or community-based GIS, and GIS and society developed in urban geographic research, so did a more focused debate centered around GIS and Indigenous peoples. (Contains 3 figures and 38 notes.)