This study was conducted to estimate the allocative efficiency of tomato producers in the two (2) production basins of Moundou during the 2025 growing season. Data was collected from 212 tomato producers using a random sampling technique. The cost frontier was determined by applying the self-dual property of the stochastic Cobb-Douglas production function. The estimated average allocative efficiency score was 79%, while only 19% of producers achieved a level above 90%. The allocative efficiency of 28.78% of farmers ranges from 71 to 80%, followed by 22.64% in the range of 81 to 90%. The results illustrate that there is still potential to increase production and reduce costs by 21% at the current level of input use and available technology. The yield coefficient is negative, indicating that a one percent increase in yield reduces the cost by 0.065 percent. The estimated elasticities for land rental and inputs have a positive and significant effect on the total cost of production. An optimal mix of inputs could reduce production costs. Regarding the independent variables, the farmer’s age, as an indicator of relevant experience, and access to extension services were found to be significant contributors to allocative efficiency.