This publication presents the conference’s main findings, key messages, and proposed way forward, reflecting participants’ shared commitment to advancing safety and sustainability in radioactive waste management, decommissioning, environmental protection, and remediation. The Conference Chair and Co Chair Report summarizes insights drawn from presentations, panel discussions, rapporteur reports, and the dedicated session on future directions. The proceedings also capture the outcomes of the special IAEA–ICRP joint session on safety and sustainability, which explored how to balance competing factors when optimizing protection and how to effectively engage interested parties in this process.