"Declarative Agent Languages and Technologies III" is a specialized publication that presents the results of the third international workshop on declarative agent languages and technologies, which took place in 2005 in Utrecht, Netherlands. This collection of selected and revised contributions provides a comprehensive insight into current developments and research findings in this dynamic field of computer science. The editors, including Ulle Endriss, Paolo Torroni, and Matteo Baldoni, have carefully curated the works to highlight the latest trends and challenges in the development of agent technologies. With a focus on technical and IT-related topics, the book is aimed at professionals, researchers, and students who are engaged with the theoretical and practical aspects of agent systems. The publication spans 248 pages and is written in English, making it a valuable resource for anyone interested in the intersection of declarative languages and agent technologies. The paperback cover ensures an appealing and practical handling.