Scaling up and accelerating Farmer-led Irrigation Development (FLID) holds significant potential for short-term recovery for the most vulnerable farmers and, in the longer term, can also help to safeguard domestic food security and strengthen farmers’ ability to recover from shocks and adapt to a changing environment. FLID recognizes that farmers have persistently filled the gap where public-led irrigation services haven’t reached and improved on them where they do exist. Farmers have taken the initiative to expand irrigation, optimize and increase productivity. They have developed technologies, invested, and crafted market linkages. And they have seen quick returns on their efforts, often against all odds. This guide aims to provide governments with the practical strategies to catalyze FLID and scale it up, making it a faster, more sustainable and inclusive process.