This is the third in a series of five-year planning documents that have guided government geoscience in Yukon over the last ten years. It presents a broad set of needs and priorities for Yukon geoscience for the next five years, but is not a business or work plan. Although developed primarily from the Yukon Geological Survey (YGS) perspective, the Geological Survey of Canada and universities will help to meet these needs either independently or through partnerships with the YGS. It was developed during the spring, summer of 2004 as an internal draft that was later modified and refined through consultation with the Geological Survey of Canada and the Technical Liaison Committee to the YGS. Over the last five years, the need for geoscience information has grown and spread to a wider and wider audience. Geoscience is utilized primarily by the mining and petroleum sectors to support exploration for minerals and hydrocarbons, but it is increasingly playing a role in other industries such as forestry, fisheries and tourism. In all of these industries it is playing a role in their development and management. Decisions related to the utilization of natural resources are increasingly being made or influenced by many groups including developers, land managers planners, regulators, First Nations, and the general public. Their decisions need to be formed with accurate information about the nature and potential of resources, and the best practices in mitigating and preventing environmental damage. This volume includes sections on: bedrock mapping, mineral deposit studies, mineral assessments, regional geochemical and geophysical surveys, subsurface geology, energy/hydrocarbons, surficial geology and placer deposits, information management and outreach.