The Cenozoic basins of Sardinia in the geodynamic framework of the Western Mediterranean. Many pre-rifting (tightest)reconstructions exist. In general, they agree linking the Catalan Margin1 with the SW Sardinia Margin and the Provence Margin 2 with the NW Sardinia Margin. Paleogene syntectonic basins preceded the Western Mediterranean Rifting in Sardinia and in SW France and Gulf of Lion. Position A of the CSB (Romagny et al., 2020) corresponds to the early phase of rifting (Aquitanian). The Ligurian-Provençal (LPR) western arm of the Rift System as well as the Eastern Sardinia arm (SGS) display already deep-water environments in their axis. Position B of the CSB is one proposed based on magnetic anomalies (Bayer et al., 1973) for the starting of the formation of the oceanic crust in the Late Burdigalian. Between Position A and B, the LPR was active while the SGS aborted. On the Present position C of the CSB, the Late Miocene to Recent trans pressional Campidano Graben is figured. It is superimposed on the SGS whose faults were reactivated during the Africa-Europe convergence.