This is the proceedings of the International Symposium on Origin of Matter and Evolution of Galaxies which was held near Tokyo, Japan, in November 2003. The meeting brought together many scientists from vast fields — nuclear physics, particle physics, cosmic-ray physics, cosmology, astronomy, geophysics, and others — to promote discussion and collaboration.The proceedings have been selected for coverage in: • Index to Scientific & Technical Proceedings® (ISTP® / ISI Proceedings)• Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)• CC Proceedings — Engineering & Physical Sciences