This guide provides a comprehensive framework, tools, and examples for integrating a gender lens into waste management and recycling investments. It emphasizes the often overlooked contributions of women in the sector and the missed opportunities resulting from gender disparities. By adopting gender-smart activities, investors can unlock untapped markets, increase market share, drive innovation, enhance traceability and supply chain sustainability, and mitigate risks. Moreover, gender-smart investments can improve livelihoods and contribute to the sustainability of the supply chain. The guide offers recommendations for funds and investment teams on how to incorporate these practices effectively.