Uncontrolled urbanization impairs the efficiency of food supply and distribution systems (FSDSs). The demand for food in the cities is growing and requires quantities of food that rural and peri-urban areas may not be able to supply. Moreover, existing market, storage and transport infrastructure is less and less able to cope with the growing quantities of foodstuffs. And so the informal sector expands to provide low-income families with their only means of livelihood. In such a context, planners may not only be asked to produce a town-planning scheme for the city or a plan for a market, but, more importantly, they are expected to know about food supply and distribution systems, how to make them as efficient and dynamic as possible by mobilizing the resources and using the various instruments available to them. The aim of this guide is not to provide prescriptive rules, but rather general guidelines that planners can adapt to the local situation and translate into concrete action.