Photochemistry, the study of light triggered chemical reactions, is experiencing a resurgence driven by significant advancements in organic and supramolecular photochemistry. These fileds are opening up new avenues for sustainable synthesis, materials science, and biomedical applications. By enabling efficient and selective synthesis of complex molecules, understanding molecular processes by the influence of light as a reagent, providing eco-friendly solutions, and informing the design of photoresponsive materials and devices, organic and supramolecular photochemistry are poised to transform various fields, from material science to medicine. The second edition of ETPP 2026 conference, spotlighting "Organic and Supramolecular Photochemistry", will provide a platform for experts to exchange ideas, drive innovation, and explore new discoveries.