An appropriate standardized data model is necessary tofacilitate electronic publication and analysis ofarchaeological data on the World Wide Web. Ahierarchical ``item-based'' model is proposed which canbe readily implemented as an Extensible MarkupLanguage (XML) tagging scheme that can represent anykind of archaeological data and deliver it in across-platform, standardized fashion to any Webbrowser. This tagging scheme and the data model itimplements permit seamless integration and jointquerying of archaeological datasets derived from manydifferent sources.