This paper presents the study of characteristic including (mechanical, thermal, and some dielectric properties) of chestnut shell filler/ epoxy composite. Composite plate was made by hand-layup technique. The filler content was 5% by weight. The tensile, impact, hardness, flexural strength and compression were showed to be increased while Young's modulus was little increased. The dielectric strength, dielectric constant, and volume resistivity were evaluated. The bending (Young's modulus values) and hardness tests were also estimated as a function of water submersion time at room temperature for a period up to 8weeks. The obtained results indicated that the composite has responded to water absorption.