Thanks to improving living standards, Vietnamese have been consuming increasing amounts of fresh vegetable over the past ten years. Yet, the market for fresh vegetable seems quite sketchy and disorganized. The aim of this research is to provide a more transparent picture of this apparently chaotic market by addressing questions related to the origin of the vegetable sold in Ha Noi at different times of the year. This research is focused on the means of transportation, the organization of the vegetable marketing chains, the relationship between seasonality, the geographic origin of vegetables and the marketing chain, the atomicity of the market and its consequences in terms of organization, and the opportunities for developing off-season production for various vegetables. To answer such questions, surveys were conducted in March, June, August and November, in order to take into account changes in the origin of the products, and in the organization of the supply chain. The interviews focused on the different actors participating in Ha Noi's main vegetable markets; e.g. producers (if they sold vegetables themselves), wholesalers, assemblers, retailers, etc. The survey was carried out on the main wholesale or producer markets, i.e. markets on which vegetable products are exchanged overnight between traders, wholesalers, assemblers and/ or producers (who bring the products from the main production areas), and the retailers (who sell them to the urbanites during the day). Seven retail markets were surveyed during the daytime. The main results of the survey indicate that: Almost all leafy vegetables sold in Ha Noi are grown close to the city: 95 -100% of the lettuce comes from less than 20 km away, and 73-100% of the kangkong is grown within 10 km from the city. Although leafy vegetables can be grown throughout the year, their yield may decrease during the cold season. Yet, these vegetables never come from outside the Red River Delta. Most temperate vegetables (carrot, tom