Do we have abundant uranium or are we heading for a shortage? There are widely differing views on this question which has important implications for many sectors of the nuclear industry. The first step in answering the question is a careful survey of world reserves and expected additional resources. This review of the latest published figures from various regions of the world suggests that, in spite of increased exploration activity in recent years, increases in proven reserves have been modest and no important new regions of potential uranium production have come to light.