A new perovskite Pb(In1/2Ta1/2)O3compound was successfully prepared through the wolframite phase oxide, utilizing fast firing for the enhancement of formation of the perovskite phase and densification. Dielectric properties of Pb(In1/2Ta1/2)O3are found to be typical of a ferroelectric relaxor exhibiting a broad maximum of the permittivity at 5 °C at 1 kHz, strong dielectric dispersion around room temperature, and rounded polarization‐electric field hysteresis loops.