Dissemination of legume technologies to Sub-Saharan farmers by NGOs and research institutes has stimulated farmers to grow grain legumes, thereby providing farmers with substantial harvest and income. During the second quarter of 2012, N2AFRICA a project that provides farmers in Africa with technologies to grow grain legumes extended their project activities to Sierra Leone. N2AFRICA provided Sierra Leonean small scale farmers with the following grain legumes; groundnuts, cowpeas and soybeans, because these legumes are rich in protein and have the ability to fix nitrogen to the soil. After production some of these legumes are consumed by the farmers and the rest is sold. Therefore N2AFRICA decided to research the value chains of the mentioned legumes from inputs to the final consumer. This research investigates the value chains of the groundnut, cowpea and soybean in Sierra Leone.