The international ICT4S 2025 conference brings together leading researchers in ICT for Sustainability with government and industry representatives with an interest in using, analysing, designing and deploying ICT for environmental and social sustainability. The conference aims to create discussion and movement towards a fundamental change in ICT systems among researchers focusing on ICT effects on sustainability and developers of sustainable ICT systems or applications. Submissions are open for research papers, workshops and the doctoral symposium tracks on all aspects of ICT applied to the U.N Sustainability Development Goals.