“Greening” is a relatively new ambition for practitioners of the market systems development approach, but one that is fast gaining traction. The guideline draws on a small but growing body of lessons and research on the intersection between MSD and agriculture, and provides practical guidance and support to donors and implementers who want to green their agricultural MSD activities. This guide is relevant for any level of ambition to “green” an MSD program: from mere curiosity to pilot greener business models in an intervention sector, through to having a comprehensive strategy that puts a program’s environmental and economic objectives on an equal footing