In　this　work,　we　have　investigated　the　influence　of　polyaniline　on　the　structural　and　electrical　properties　of　polyaniline-nickel　oxide　(PANINiO)　nanocomposites　prepared　by　in-situ　chemical　polymerization.　The　experimental　procedure　involved　the　synthesis　of　Polyaniline　(PANI)　and　their　nanocomposites　with　varying　weight　percentages　of　NiO　nanoparticles　using　an　in-situ　polymerization　route.　The　structure　of　NiO@PANI　nanocomposites　was　verified　using　the　X-ray　diffraction　technique.　It　was　observed　that　NiO　exhibited　a　single-crystalline　structure,　whereas　PANI　displayed　a　non-crystalline　structure.　Scanning　electron　microscopy　(SEM)　revealed　spherical　NiO　and　granular　PANI,　both　with　homogeneous　distribution,　and　increased　polymer　content　resulted　in　more　porosity.　The　measured　values　of　dielectric　constant,　dielectric　loss,　and　AC　conductivity　decreased　as　frequency　and　temperature　increased.　The　optimum　presence　of　conductive　PANI　with　nickel　oxide　in　a　nanocomposite　is　responsible　for　the　increase　in　AC　electrical　conductivity.　The　prepared　nanocomposite　material　behaves　as　a　semiconductor　and　may　be　helpful　for　charge　storage　devices　and　related　field　applications.