This evaluation is presented as part of the Effectiveness Review Series 2016/17, selected for review under the livelihoods thematic area. This report documents the findings of a quasi-experimental evaluation carried out in July 2016 that sought to assess the impact of the activities of the 'Optimizing of local chicken and sunflower smallholder producers project' in Tanzania. The project started in October 2012 and was completed in August 2015. Its overall objective was to contribute to improved production, sales and revenues from sunflower and local chicken, by providing the necessary inputs and technical advice on modern methods of farming, and forming marketing groups for these commodities for increased sales. The project was implemented in three districts - Kilosa district in Morogoro region, and Kongwa and Chamwino districts in Dodoma region. The project was intended to benefit up to 1000 households in the three districts.