Polyamide has excellent properties such as high-temperature resistance, crystallinity, fatigue resistance, melting temperature, and toughness, but low thermal conductivity values. For this reason, its usage in thermal applications is limited. Thermal applications can be increased by increasing its thermal conductivity with carbon-based fillers added to the PA structure. Synthetic graphite (SG) is a well-known thermal conductive filler. The aim of this study is to examine the effect of synthetic graphite (SG) loading on the mechanical, thermal and physical properties of polyamide. SG loaded polyamide composites were produced by using co-rotating twin-screw extruder. The tensile and flexural strength of the polyamide decreased with the addition of SG in all weight fractions. In this study, the highest in-plane and through thermal conductivity values were obtained to be 22.93 W/mK and 1.78 W/mK with 50% wt synthetic graphite loading into polyamide. As the synthetic graphite filler ratio was increased, the in-plane thermal conductivity values of polyamide increased more than the trough-plane thermal conductivity values, which is probably due to fact that the graphite flakes are strongly aligned in the in-plane direction within the polyamide matrix. Keywords: Polyamide (PA), thermal conductivity, synthetic graphite, mechanical properties