Organized by the Arab Physical Society (ArPS) in collaboration with Fayoum University, the Third ArPS Summer School on High Energy physics aims to provide students with a week-long opportunity, from 5 to 10 September 2026, to deepen their understanding of High Energy physics and explore cutting-edge research topics. We expect a diverse group of participants, including recent Physics Bachelor graduates, graduate students, postdoctoral researchers, and early-career scientists passionate about advanced physics. The program will be conducted in both English and Arabic languages. Successful