Fonio (Digitaria exillis) locally called Acha or hungry rice, Finger millet (Eleusine coracona) locally referred to as Tamba are cereals cultivated in plateau state, Nigeria use for porridge, main ingredients of Alcoholic and non-alcoholic drinks and a staple food in plateau state anSd other parts of northern Nigeria; by all classes of people. Thus the aim of this study was to carry out comparative nutritional analysis of Fonio flour, Finger millet flour and their composite flours. Fonio and Finger millet grains were bought from retailer in Monday market Pankshin, thoroughly washed with distilled water sun dried and grinded with an electric blender and sieved to obtain finer flour. 100gm each of Fonio flour and Finger millet flour were mixed in a bowl and packaged as composite. The flours were used for proximate and chemical composition and Amino acid analysis. The result of the proximate chemical composition and mineral content analysis of: Fonio was; moisture (4.03+0.028), crude fiber (7.03+0.06), crude fat (2.87+ 0.014), NFE (60.66+0.08), phosphorus (0.08+0.002), calcium (0.17+0.015),Finger millet proximate chemical composition and mineral content were; moisture (5.03+0.025), crude fiber (9.24+0.011), crude fat (4.90+0.08), crude protein (8.17+0.012), ash (2.55+0.014), NFE (70.20+0.011), Phosphorus (0.03+0.001) and Calcium (0.11+0.012). the composite flour proximate composition of mineral result was moisture (5.64 +0.024, crude fiber 8.24+ 0.020), crude fat (3.84+0.017), crude Protein (8.55 + 0.024), Ash (8.91 + 0.042), NFE (62.92+0.031), Phosphorus (0.04+0.002), Calcium (0.13+0.017). The proximate chemical composition among the cereals flour and their composite showed significant difference in Calcium content observed among the cereals and their composite flours because P> 0.05. These results indicates Fonio, Finger millet and the composite flours are rich in essential conditionals essential and non - Essential amino acids, which falls within the recommended level of world health organization (WHO). In conclusion, Finger millet, Fonio cultivated in plateau state are highly nutritious food with good storage capacity in addition the composite flour is highly nutritious and can serve as an alternative way of using Fonio and Finger millet thus increasing the level of food security. It was recommended that s that; the Federal Government and private stake holders should make available credit facilities to Fonio and Finger millet farmers, there should be in place strategically target investment in composite flour Production and lastly Finger millet, Fonio farmers and composite producers should participate in decision making towards improving and utilization of Finger millet, Fonio and their composite.