This six-volume set LNCS 15794-15799 constitutes the refereed proceedings of the 14th International Conference on Design, User Experience, and Usability, DUXU 2025, held as part of the 27th International Conference on Human-Computer Interaction, HCII 2025, in Gothenburg, Sweden, during June 22-27, 2025. The total of 1430 papers and 355 posters included in the HCII 2025 proceedings was carefully reviewed and selected from 7972 submissions. The six volumes cover the following topics: Part I: Information design and visualization; emotional interaction and persuasive design; and interactive systems and user behavior. Part II: UX design and evaluation methodologies; inclusive design and accessible experiences; and product and industrial design. Part III: Design and the digital transmission of culture; design for arts and creativity; and designing for health and therapeutic experiences. Part IV: Consumer experience and service design; design and evaluation of technology-enhanced learning; and UX in automotive and transportation. Part V: Design education and professional practice; and human-centered design and interactive experiences. Part VI: AI and the future of UX design; and UX in AI and emerging technologies.