Green skills refer to the knowledge, abilities, values, and attitudes needed to live in, develop, and support a sustainable and resource-efficient society. These skills are essential for the transition to a green economy and the achievement of the Sustainable Development Goals. Green skills include technical knowledge, expertise, and abilities that enable the effective use of green technologies and processes in various sectors. They are needed by all sectors and at all levels in the workforce. Green skills can be learned to help workers pursue a new role in emerging green sectors, such as green energy, sustainability, and environmental remediation. The necessary investment in skills development has been underestimated in the context of national commitments to implement major international climate agreements. Green skills are not limited to specialized sustainability areas, and individuals and job families within an organization will require a tailored combination of skills and behaviors to improve their performance in the green economy.