We have the pleasure to invite you to the 11th International Conference on Environmental Management, Engineering, Planning and Economics (CEMEPE) and SECOTOX Conference, that will be jointly held in Lefkada island, Greece, from June16 to 20, 2024. The conference will be organized by the Division of Hydraulics and Environmental Engineering, Department of Civil Engineering, Aristotle University of Thessaloniki, and the Society of Ecotoxicology and Environmental Safety (SECOTOX), in collaboration with the Sector of Industrial Management and Operations Research, School of Mechanical Engineering, National Technical University of Athens, the Department of Civil Engineering, University of Thessaly, the Department of Food Science and Technology, International Hellenic University, the Department of Environmental Engineering, Democritus University of Thrace, and the Department of Environment, University of Thessaly.