In this work, Nano powder of (Al1-xZnxFe2O4) with (x=0.2, 0.4, 0.6, 0.8), were synthesized using sol-gel auto- combustion at temperature of 150℃. The structural properties of the compounds were studies using X-ray (XRD) diffraction, energy dispersion radiation (EDX) and field-emission scanning electron microscopy (FE-SEM), show homogenies particle with size in the range of (30-32) nm by using the Debye–Scherrer formula. Dielectric properties in the frequency range (100Hz-5MHz) were evaluated with the measuring device (LCR) meter. Dielectric constant (εr'), loss factor (εr′′) were decreases with increasing frequency, while the Conductivity (sa.c) increased with increasing the frequency