It is our great pleasure and honor to extend a warm welcome to all of you to the 38th International Cosmic Ray Conference (ICRC2023), which will be held at Nagoya University in Nagoya, Japan.

The ICRC conference series has been held biennially since 1947 by Commission C4 (Astroparticle Physics) of the International Union of Pure and Applied Physics (IUPAP*). The main topics covered by this conference are Cosmic Ray Physics, Gamma-Ray Astronomy, Neutrino Astronomy & Neutrino Physics, Dark Matter Physics, Solar and Heliospheric Physics, Multi-messenger Astronomy, and an additional new topic in the 2023 conference is Gravitational Wave Astronomy. ICRC2023 will provide an excellent forum for you to refresh your knowledge base and explore innovations. We hope that at the end of the conference, participants will feel that they have collected the latest information available in the field of Astroparticle Physics.