 The present paper aims to study the preparation of polyaniline nanofibers through simple interfacial polymerization. Ammonium persulfate, hydrochloric acid and chloroform were used as oxidant, dopant and organic solvent respectively. Field emission scanning electron microscopy, pheasome, x-ray diffraction and Fourier transform infrared spectroscopy, FTIR, techniques were used to analyze the product. Pheasome results show that polyaniline has nanofiber morphology. XRD results show the crystalline properties of polyaniline nanofiber and FTIR results confirmed the formation of polyaniline in different monomer-slash-oxidant molar ratios. This study provides a better understanding on the synthesis of uniform polyaniline nanofibers through interfacial polymerization. This article was authored by Shara Hosham, Sahara Ibrahim, Ahmad Abdelahi and others.