In situ polymerization of pyrrole was executedin the presence of expanded graphite to synthesizepolypyrrole–expanded graphite composites (PPy/EG) bychemical oxidation method. The PPy/EG composites have beenprepared with various compositions (2%, 5%, 7.5%, 10% wt.%) of expanded graphite in pyrrole. Morphology of thecomposites has been examined by scanning electronmicroscopy (SEM). The polypyrrole-expanded graphitecomposites were also examined by X-ray diffractometry (XRD)and Attenuated total reflectance (ATR). The a.c. conductivitybehavior has been analyzed by LCR-Q-Meter-SORTER. Thepresence of expanded graphite in the matrix have an excellenteffect on the observed conductivity values. The results showedthat these composites are of preferably technological andbusinesslike interest.