The International Symposium “EXOTIC NUCLEI – EXON 2009” was dedicated to one of the most important and intensively developing areas of investigations in the field of nuclear physics – the physics of nuclei in exotic states. This Symposium was organized jointly by the four largest scientific centers where this field is explored – the Joint Institute for Nuclear Research in Dubna, the National laboratory GANIL (France), the Research center RIKEN (Japan) and the Scientific center for heavy ions GSI (Germany). The scientific programme included invited talks on actual problems of the physics of exotic nuclei and new projects for large accelerator complexes and experimental facilities. In addition, results of the latest experiments on the synthesis and studying of the properties of superheavy elements were reported. The Symposium was also dedicated to reports on the present and future heavy ion and radioactive beam accelerator complexes in different scientific centers.