The application of advanced materials has been facing many problems, as follows limitation at supplies, high cost manufacturing, environment impact and dificult to decompose. Therefore, it need new materials that can be made in accordance with the requirement. The aims of this study is to determine of actual fiber volume fraction and the influence of fiber volume fraction on tensile and compression strengths of unidirecsional sugar palm fiber / epoxy composite. The materials used in this research are sugar palm fiber with epoxy matrix and produced using press mold technique. The test specimens were prepared according to ASTM D638 standards for tensile specimens and ASTM 3410 for compressive specimens. Variations in fiber volume fraction were planed being 0%, 10%, 20%, 30%, and 40% for tensile and compressive specimens. The actual fiber volume fraction after being analyzedw were found being 0%, 9.30%, 16.50%, 24.70%, and 29.01% for tensile specimen, while for compressive specimens were found being 0%, 7.64%, 16, 75%, 25.73%, and 31.07%. The highest tensile strength was found at Vf 24,70% which is 42,856 MPa and the lowest tensile strength was at Vf 0% which is 33,839 MPa, and for the highest compressive strength was found at 0,0% Vf which is 41,501 MPa and the lowest compression strength was found at Vf 31.07% which is 34.824 MPa. For the highest tensile modulus was found at Vf 29.01% which is 1768,71 MPa and the lowest tensile elastic modulus was found at Vf 0% which is 684.00 MPa, and for the highest modulus of elasticity was found at Vf 0% which is 1563.6 MPa and the lowest modulus of elasticity was found at Vf 25.73% which is 1075.9 MPa.