In Côte d’Ivoire, tomato cultivation is hampered by the presence of parasites in cultivated soils. However, every year the country releases large quantities of agro-industrial residues with agricultural potential into the environment, which are capable of alleviating this situation. The aim of this study was to assess the agricultural potential of carbonised rice husks, carbonised sawdust and cashew pellets with a view to developing substrates for soilless tomato production. In addition to the control (Soil), five treatments based on the above-mentioned residues were set up and laid out in a completely randomised block design. The parameters analysed included the physico-chemical properties of the soil, in particular water retention capacity, pH, and concentrations of organic matter, total nitrogen, assimilable phosphorus and potassium. In addition, the agronomic parameters considered included plant height and diameter, fruit number and mass, and yield. The results revealed that cashew pellet (C100) is richer in nitrogen (2.1%) but very acidifying (pH = 4.6). Substrates based on rice and sawdust offer good physico-chemical conditions. In terms of productivity, treatments SBC271 (17.93 t.ha-1) and SBC55 (14.69 t.ha-1) gave the highest yields after soil (19.85 t.ha-1). This research has shown that it is possible to develop soilless growing substrates from these residues in order to sustainably increase market garden production.