This checklist supports governments in designing and implementing lasting and scalable traceability systems in their seafood sectors. It compiles insights and advice gleaned from traceability experts and published resources and case studies. After reviewing findings for common themes and factors that influenced or interfered with traceability, this checklist was created for governments to consider, use, and revisit to avoid others’ “glorious failures” and work towards effective solutions. Scalable and lasting seafood traceability can be achieved by adhering to an iterative, 4-stage process outlined in this checklist and in conjunction with the Comprehensive Traceability Principles and Pathway.