In　the　present　work,　Zinc　Oxide　(ZnO)　nanoparticles　(NPs)　were　synthesized　by　the　chemical　co-precipitation　method　using　Zinc　Chloride　as　the　initial　chemical,　while　Nickel　and　Cobalt　chloride　as　dopants.　Phase　identification　of　metal　(Ni,　Co)　doped　Zinc　Oxide　nanoparticles　(NPs)　was　observed　using　x-ray　diffraction　(XRD).　The　small　lattice　distortion　or　phase　changes　appeared　due　to　shifting　of　diffraction　angles　peaks　towards　larger　angle　in　ZnO　are　corresponded　to　metal　(Ni,　Co)　dopant.　The　average　crystallite　size　appears　to　decrement　in　NP　size　from　7.67　nm　to　6.52　nm　and　5.35　nm　to　5.17　nm　with　increasing　5　%　to　80　%　of　metal　(Ni,　Co)　dopant　respectively.　The　optical　characteristics,　including　the　absorption　spectra　of　the　prepared　sample　were　observed　through　UV-Vis　spectroscopy,　Meanwhile　SEM　confirmed　the　observation　of　composition　change　in　specimen　with　metal　(Ni,　Co)　dopant　concentration.　The　bandgap　value　was　also　found　decrement　5.23　eV　to　5.05　eV　with　increment　of　metal　(Ni,　Co)　dopant　concentration.　The　functional　groups　were　measured　by　Fourier　transformation　infrared　spectroscopy　(FTIR).　FTIR　peaks　found　the　metal　(Ni,　Co)　doped　ZnO　with　the　vibration　mode　of　(Zn2+　-O2-)　ions　due　to　the　increment　of　dopant　concentrations.　Furthermore,　electrical　results　show　the　ohmic　behavior　of　prepared　samples.　These　findings　indicate　the　possibility　of　tuning　optical,　structural　and　electrical　properties　of　metal　(Ni,　Co)　doped　ZnO　with　various　dopant　concentrations　of　Nickel　and　will　have　great　potential　to　find　application　in　optoelectronic　devices.　(C)　2021　The　Author(s).　Published　by　Elsevier　B.V.　on　behalf　of　King　Saud　University.