This is the 6th meeting of the ISPUN series which started in 2002 with ISPUN02 held in Halong Bay. ISPUN23 is expected to be supported by Vietnam Atomic Energy Institute (VINATOM), Helmholtz Research Academy Hesse for FAIR (HFHF), IJCLab Orsay, and endorsed by Asian Nuclear Physics Association (ANPhA). Like previous ISPUN meetings, ISPUN23 is aimed at bringing together not only the leading nuclear physicists, but also young colleagues currently involved in the forefront of the nuclear physics research. During ISPUN23, the OC of ISPUN23 also plans to celebrate the career and retirement of Professor Dao Tien Khoa and Professor Nicolas Alamanos (two active organizers of previous ISPUN meetings) with an extended session on direct nuclear reactions and the implication on nuclear astrophysics, EOS of neutron star matter, shell evolution of dripline nuclei, structure of unstable nuclei, and nuclear clusters.