Open Digital Rights Language (ODRL) is an extensible language for specifying Rights Policy in the context of Digital Rights Management (DRM) applications. The OpenGIS® Web Map Service (WMS) supports the creation and display of maps. In this paper we extend ODRL to accommodate licensing for geographic data created by WMS. Categories and Subject Descriptors K.6.m [Management of computing and information System]: Miscellaneous – Security General Terms Security Keywords Rights Expression Language, Digital Rights Management, Web Map Service, Geospatial Data