This paper discusses the Greek Mesolithic record in the light of refinements to the international calibration curve and recent archaeological research. Gentral to the discussion are the timefiame used for this period of Greek prehistory, and the diagnostic potential, or visibility, of Mesolithic stone tools. Rather than offering a comprehensive account of Mesolithic sites across Greece, this study focuses on a few known cave sites in the northwest, in order to bring out some less pronounced aspects of their material record. Close and comparative examination of their radiocarbon dates, and traits of continuity and change in the lithic industries, highlights a regional pattern. At some sites, occupation extended into the Holocene, but there is little or no contrast to the preceding, late Upper Palaeolithic technological traditions. A working hypothesis to account for the geographic, temporal and cultural diversity of early Holocene sites and finds in Greece is thus spelled out. It is proposed that the Greek Mesolithic record is the manifestation of a mosaic of human groups, of different origins and cultural traditions, subsisting on a variety of resources and living in different regions, at different times and seasons ofthe early Holocene.