This open access book compiles the proceedings of the inaugural African Conference on High Energy Physics (ACHEP), which took place in Rabat and Kenitra, Morocco, from October 23 to 27, 2023. The conference brought together specialized scientists in the field of High Energy Physics (HEP) from universities and research institutes worldwide to discuss current developments, new trends, results, and perspectives. The primary goal of ACHEP meetings is to encourage young African researchers and HEP experts to express and discuss new ideas.

The conference proceedings are organized into nine areas with the following titles:

• Electroweak and Higgs Physics
• Astroparticle Physics and Cosmology
• Neutrino Physics and Dark Matter Searches
• Strong Interaction and Hadron Physics
• Education and Outreach in Africa
• Physics Beyond the Standard Model
• Detectors and Future Experimental Facilities
• Quark and Lepton Flavor Physics
• Heavy Ions

This book is designed to cater to a diverse audience, ranging from PhD students and early-career researchers to seasoned academics. It is tailored for individuals with a background or interest in the field of HEP, encompassing both theoretical and experimental physicists, as well as researchers from related disciplines such as particle physics, astrophysics, and cosmology.